---
metadata:
  - name: generator
    content: Diplodoc Platform v5.50.6
alternate:
  - https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md
  - https://ytsaurus.tech/docs/ru/flow/generated_docs/all_yson_structs.md
---
> **Documentation Index:** Fetch the complete configuration index at https://ytsaurus.tech/docs/en/llms.txt

# Configuration reference

This file contains descriptions of all specs and configs used for YTsaurus Flow configuration. The file generation algorithm recursively searches for all subconfigs. It is not perfect.

<!-- source: en/flow/generated_docs/NYT_NApi_EConnectionType.md -->
## NYT::NApi::EConnectionType {#NYT_NApi_EConnectionType}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `native` |  ||
|| `rpc` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NApi_EConnectionType.md -->

<!-- source: en/flow/generated_docs/NYT_NApi_NRpcProxy_EAddressType.md -->
## NYT::NApi::NRpcProxy::EAddressType {#NYT_NApi_NRpcProxy_EAddressType}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `internal_rpc` |  ||
|| `monitoring_http` |  ||
|| `http` |  ||
|| `https` |  ||
|| `public_rpc` |  ||
|| `chyt_http` |  ||
|| `chyt_https` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NApi_NRpcProxy_EAddressType.md -->

<!-- source: en/flow/generated_docs/NYT_NApi_NRpcProxy_TConnectionConfig.md -->
## NYT::NApi::NRpcProxy::TConnectionConfig {#NYT_NApi_NRpcProxy_TConnectionConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/client/api/rpc_proxy/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/client/api/rpc_proxy/config.h)

#|
|| **Parameter** | **Description** ||
|| `connection_type` | **Type**: [NYT::NApi::EConnectionType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NApi_EConnectionType)
**Default value**: `native`
 ||
|| `cluster_name` | **Type**: `std::optional<std::string>`
 ||
|| `table_mount_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NApi::TTableMountCacheConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NApi_TTableMountCacheConfig)`>`
**Default value**: `{}`
 ||
|| `replication_card_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NChaosClient::TReplicationCardCacheConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NChaosClient_TReplicationCardCacheConfig)`>`
 ||
|| `chaos_lease_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NChaosClient::TChaosLeaseCacheConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NChaosClient_TChaosLeaseCacheConfig)`>`
 ||
|| `cluster_url` | **Type**: `std::optional<std::string>`
 ||
|| `cluster_tag` | **Type**: `std::optional<NYT::TStrongTypedef<unsigned short, NYT::NObjectClient::TCellTagTag, NYT::TStrongTypedefOptions{true}>>`
 ||
|| `proxy_role` | **Type**: `std::optional<std::string>`
 ||
|| `proxy_address_type` | **Type**: `std::optional<`[NYT::NApi::NRpcProxy::EAddressType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NApi_NRpcProxy_EAddressType)`>`
 ||
|| `proxy_network_name` | **Type**: `std::optional<std::string>`
 ||
|| `proxy_addresses` | **Type**: `std::optional<std::vector<std::string>>`
 ||
|| `proxy_endpoints` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TServiceDiscoveryEndpointsConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TServiceDiscoveryEndpointsConfig)`>`
 ||
|| `proxy_unix_domain_socket` | **Type**: `std::optional<std::string>`
 ||
|| `enable_proxy_discovery` | **Type**: `bool`
**Default value**: `true`
 ||
|| `proxy_url_aliasing_rules` | **Type**: `THashMap<std::string, std::string>`
**Default value**: `{}`
 ||
|| `dynamic_channel_pool` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TDynamicChannelPoolConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TDynamicChannelPoolConfig)`>`
**Default value**: `{}`
 ||
|| `ping_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `proxy_list_update_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `proxy_list_retry_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `max_proxy_list_retry_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `max_proxy_list_update_attempts` | **Type**: `int`
**Default value**: `3`
 ||
|| `rpc_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `rpc_acknowledgement_timeout` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `15000`
 ||
|| `timestamp_provider_latest_timestamp_update_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `default_transaction_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `default_lookup_rows_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `default_select_rows_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `default_total_streaming_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15m`
 ||
|| `default_streaming_stall_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `use_total_streaming_timeout_for_heavy_reads` | **Type**: `bool`
**Default value**: `true`
 ||
|| `default_chaos_lease_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `default_ping_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `bus_client` | **Type**: `NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TBusConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TBusConfig)`>`
**Default value**: `{}`
 ||
|| `idle_channel_ttl` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `http_client` | **Type**: `NYT::TIntrusivePtr<`[NYT::NHttp::TClientConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NHttp_TClientConfig)`>`
**Default value**: `{}`
 ||
|| `https_client` | **Type**: `NYT::TIntrusivePtr<`[NYT::NHttps::TClientConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NHttps_TClientConfig)`>`
**Default value**: `{}`
 ||
|| `request_codec` | **Type**: [NYT::NCompression::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCompression_ECodec)
**Default value**: `none`
 ||
|| `response_codec` | **Type**: [NYT::NCompression::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCompression_ECodec)
**Default value**: `none`
 ||
|| `enable_legacy_rpc_codecs` | **Type**: `bool`
**Default value**: `false`
 ||
|| `enable_retries` | **Type**: `bool`
**Default value**: `false`
 ||
|| `retrying_channel` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TRetryingChannelConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TRetryingChannelConfig)`>`
**Default value**: `{}`
 ||
|| `modify_rows_batch_capacity` | **Type**: `long`
**Default value**: `0`
 ||
|| `clock_cluster_tag` | **Type**: `NYT::TStrongTypedef<unsigned short, NYT::NObjectClient::TCellTagTag, NYT::TStrongTypedefOptions{true}>`
**Default value**: `61444`
 ||
|| `udf_registry_path` | **Type**: `std::optional<TString>`
 ||
|| `enable_select_query_tracing_tag` | **Type**: `bool`
**Default value**: `false`
 ||
|| `do_not_drop_pure_exclusive_locks` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_control_multiplexing_band` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NApi_NRpcProxy_TConnectionConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NApi_TTableMountCacheConfig.md -->
## NYT::NApi::TTableMountCacheConfig {#NYT_NApi_TTableMountCacheConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/client/api/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/client/api/config.h)

#|
|| **Parameter** | **Description** ||
|| `shard_count` | **Type**: `unsigned long`
**Default value**: `1`
 ||
|| `expire_after_access_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30m`
 ||
|| `expire_after_successful_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30m`
 ||
|| `expire_after_failed_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `refresh_time` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `30000`
 ||
|| `expiration_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `10000`
 ||
|| `batch_update` | **Type**: `bool`
**Default value**: `false`
 ||
|| `reject_if_entry_is_requested_but_not_ready` | **Type**: `bool`
**Default value**: `false`
 ||
|| `on_error_retry_count` | **Type**: `int`
**Default value**: `5`
 ||
|| `on_error_retry_slack_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NApi_TTableMountCacheConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NBus_EEncryptionMode.md -->
## NYT::NBus::EEncryptionMode {#NYT_NBus_EEncryptionMode}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `disabled` |  ||
|| `optional` |  ||
|| `required` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NBus_EEncryptionMode.md -->

<!-- source: en/flow/generated_docs/NYT_NBus_EVerificationMode.md -->
## NYT::NBus::EVerificationMode {#NYT_NBus_EVerificationMode}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` |  ||
|| `ca` |  ||
|| `full` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NBus_EVerificationMode.md -->

<!-- source: en/flow/generated_docs/NYT_NBus_NTcp_TBusConfig.md -->
## NYT::NBus::NTcp::TBusConfig {#NYT_NBus_NTcp_TBusConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/bus/tcp/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/bus/tcp/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable_no_delay` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_aggressive_reconnect` | **Type**: `bool`
**Default value**: `false`
 ||
|| `allow_bypass_tls` | **Type**: `bool`
**Default value**: `false`
 ||
|| `min_rto` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
 ||
|| `max_rto` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `rto_scale` | **Type**: `double`
**Default value**: `2.0`
 ||
|| `connect_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `ca` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `cert_chain` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `private_key` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `ssl_configuration_commands` | **Type**: `std::vector<NYT::TIntrusivePtr<`[NYT::NCrypto::TSslContextCommand](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TSslContextCommand)`>>`
**Default value**: `[]`
 ||
|| `insecure_skip_verify` | **Type**: `bool`
**Default value**: `false`
 ||
|| `enable_quick_ack` | **Type**: `bool`
**Default value**: `true`
 ||
|| `bind_retry_count` | **Type**: `int`
**Default value**: `5`
 ||
|| `bind_retry_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `connection_start_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `packet_decoder_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `read_stall_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `write_stall_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `verify_checksums` | **Type**: `bool`
**Default value**: `true`
 ||
|| `generate_checksums` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_local_bypass` | **Type**: `bool`
**Default value**: `true`
 ||
|| `encryption_mode` | **Type**: [NYT::NBus::EEncryptionMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_EEncryptionMode)
**Default value**: `optional`
 ||
|| `verification_mode` | **Type**: [NYT::NBus::EVerificationMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_EVerificationMode)
**Default value**: `none`
 ||
|| `cipher_list` | **Type**: `std::optional<std::string>`
 ||
|| `load_certs_from_bus_certs_directory` | **Type**: `bool`
**Default value**: `false`
 ||
|| `peer_alternative_host_name` | **Type**: `std::optional<std::string>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NBus_NTcp_TBusConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NBus_NTcp_TBusServerConfig.md -->
## NYT::NBus::NTcp::TBusServerConfig {#NYT_NBus_NTcp_TBusServerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/bus/tcp/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/bus/tcp/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable_no_delay` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_aggressive_reconnect` | **Type**: `bool`
**Default value**: `false`
 ||
|| `allow_bypass_tls` | **Type**: `bool`
**Default value**: `false`
 ||
|| `min_rto` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
 ||
|| `max_rto` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `rto_scale` | **Type**: `double`
**Default value**: `2.0`
 ||
|| `connect_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `ca` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `cert_chain` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `private_key` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `ssl_configuration_commands` | **Type**: `std::vector<NYT::TIntrusivePtr<`[NYT::NCrypto::TSslContextCommand](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TSslContextCommand)`>>`
**Default value**: `[]`
 ||
|| `insecure_skip_verify` | **Type**: `bool`
**Default value**: `false`
 ||
|| `enable_quick_ack` | **Type**: `bool`
**Default value**: `true`
 ||
|| `bind_retry_count` | **Type**: `int`
**Default value**: `5`
 ||
|| `bind_retry_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `connection_start_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `packet_decoder_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `read_stall_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `write_stall_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `verify_checksums` | **Type**: `bool`
**Default value**: `true`
 ||
|| `generate_checksums` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_local_bypass` | **Type**: `bool`
**Default value**: `true`
 ||
|| `encryption_mode` | **Type**: [NYT::NBus::EEncryptionMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_EEncryptionMode)
**Default value**: `optional`
 ||
|| `verification_mode` | **Type**: [NYT::NBus::EVerificationMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_EVerificationMode)
**Default value**: `none`
 ||
|| `cipher_list` | **Type**: `std::optional<std::string>`
 ||
|| `load_certs_from_bus_certs_directory` | **Type**: `bool`
**Default value**: `false`
 ||
|| `peer_alternative_host_name` | **Type**: `std::optional<std::string>`
 ||
|| `port` | **Type**: `std::optional<int>`
 ||
|| `unix_domain_socket_path` | **Type**: `std::optional<std::string>`
 ||
|| `max_backlog_size` | **Type**: `int`
**Default value**: `8192`
 ||
|| `max_simultaneous_connections` | **Type**: `int`
**Default value**: `50000`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NBus_NTcp_TBusServerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NBus_NTcp_TDispatcherConfig.md -->
## NYT::NBus::NTcp::TDispatcherConfig {#NYT_NBus_NTcp_TDispatcherConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/bus/tcp/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/bus/tcp/config.h)

#|
|| **Parameter** | **Description** ||
|| `thread_pool_size` | **Type**: `int`
**Default value**: `8`
 ||
|| `thread_pool_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10ms`
 ||
|| `network_bandwidth` | **Type**: `std::optional<long>`
 ||
|| `networks` | **Type**: `THashMap<std::string, std::vector<NYT::NNet::TIP6Network>>`
**Default value**: `{}`
 ||
|| `multiplexing_bands` | **Type**: `NYT::TEnumIndexedArray<NYT::NBus::EMultiplexingBand, NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TMultiplexingBandConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TMultiplexingBandConfig)`>>`
**Default value**: `{}`
 ||
|| `bus_certs_directory_path` | **Type**: `std::optional<std::string>`
 ||
|| `enable_local_bypass` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NBus_NTcp_TDispatcherConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NBus_NTcp_TDispatcherDynamicConfig.md -->
## NYT::NBus::NTcp::TDispatcherDynamicConfig {#NYT_NBus_NTcp_TDispatcherDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/bus/tcp/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/bus/tcp/config.h)

#|
|| **Parameter** | **Description** ||
|| `thread_pool_size` | **Type**: `std::optional<int>`
 ||
|| `thread_pool_polling_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `network_bandwidth` | **Type**: `std::optional<long>`
 ||
|| `networks` | **Type**: `std::optional<THashMap<std::string, std::vector<NYT::NNet::TIP6Network>>>`
 ||
|| `multiplexing_bands` | **Type**: `std::optional<NYT::TEnumIndexedArray<NYT::NBus::EMultiplexingBand, NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TMultiplexingBandConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TMultiplexingBandConfig)`>>>`
 ||
|| `bus_certs_directory_path` | **Type**: `std::optional<std::string>`
 ||
|| `enable_local_bypass` | **Type**: `std::optional<bool>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NBus_NTcp_TDispatcherDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NBus_NTcp_TMultiplexingBandConfig.md -->
## NYT::NBus::NTcp::TMultiplexingBandConfig {#NYT_NBus_NTcp_TMultiplexingBandConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/bus/tcp/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/bus/tcp/config.h)

#|
|| **Parameter** | **Description** ||
|| `tos_level` | **Type**: `int`
**Default value**: `0`
 ||
|| `network_to_tos_level` | **Type**: `THashMap<std::string, int>`
**Default value**: `{}`
 ||
|| `min_multiplexing_parallelism` | **Type**: `int`
**Default value**: `1`
 ||
|| `max_multiplexing_parallelism` | **Type**: `int`
**Default value**: `1000`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NBus_NTcp_TMultiplexingBandConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NChaosClient_TChaosLeaseCacheConfig.md -->
## NYT::NChaosClient::TChaosLeaseCacheConfig {#NYT_NChaosClient_TChaosLeaseCacheConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/client/chaos_client/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/client/chaos_client/config.h)

#|
|| **Parameter** | **Description** ||
|| `shard_count` | **Type**: `unsigned long`
**Default value**: `1`
 ||
|| `expire_after_access_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
 ||
|| `expire_after_successful_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
 ||
|| `expire_after_failed_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `refresh_time` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `YsonEntity`
 ||
|| `expiration_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `10000`
 ||
|| `batch_update` | **Type**: `bool`
**Default value**: `false`
 ||
|| `retry_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `retry_attempts` | **Type**: `int`
**Default value**: `10`
 ||
|| `enable_exponential_retry_backoffs` | **Type**: `bool`
**Default value**: `false`
 ||
|| `retry_backoff` | **Type**: `NYT::TExponentialBackoffOptions`
**Default value**:

```yson
{
    "backoff_jitter" = 0.1;
    "backoff_multiplier" = 1.5;
    "invocation_count" = 10;
    "max_backoff" = 5000;
    "min_backoff" = 1000;
}
```
 ||
|| `retry_timeout` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `discover_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `acknowledgement_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `rediscover_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `rediscover_splay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `hard_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `soft_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `max_peer_count` | **Type**: `int`
**Default value**: `100`
 ||
|| `hashes_per_peer` | **Type**: `int`
**Default value**: `10`
 ||
|| `min_peer_count_for_priority_awareness` | **Type**: `int`
**Default value**: `0`
 ||
|| `enable_power_of_two_choices_strategy` | **Type**: `bool`
**Default value**: `true`
 ||
|| `max_concurrent_discover_requests` | **Type**: `int`
**Default value**: `10`
 ||
|| `random_peer_eviction_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `enable_peer_polling` | **Type**: `bool`
**Default value**: `false`
 ||
|| `peer_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `peer_polling_period_splay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
 ||
|| `peer_polling_request_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `peer_priority_strategy` | **Type**: [NYT::NRpc::EPeerPriorityStrategy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_EPeerPriorityStrategy)
**Default value**: `none`
 ||
|| `discovery_session_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
 ||
|| `disable_balancing_on_single_address` | **Type**: `bool`
**Default value**: `true`
 ||
|| `hedging_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `cancel_primary_request_on_hedging` | **Type**: `bool`
**Default value**: `false`
 ||
|| `addresses` | **Type**: `std::optional<std::vector<std::string>>`
 ||
|| `endpoints` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TServiceDiscoveryEndpointsConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TServiceDiscoveryEndpointsConfig)`>`
 ||
|| `enable_watching` | **Type**: `bool`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NChaosClient_TChaosLeaseCacheConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NChaosClient_TReplicationCardCacheConfig.md -->
## NYT::NChaosClient::TReplicationCardCacheConfig {#NYT_NChaosClient_TReplicationCardCacheConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/client/chaos_client/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/client/chaos_client/config.h)

#|
|| **Parameter** | **Description** ||
|| `shard_count` | **Type**: `unsigned long`
**Default value**: `1`
 ||
|| `expire_after_access_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `expire_after_successful_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `expire_after_failed_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `refresh_time` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `10000`
 ||
|| `expiration_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `10000`
 ||
|| `batch_update` | **Type**: `bool`
**Default value**: `false`
 ||
|| `retry_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `retry_attempts` | **Type**: `int`
**Default value**: `10`
 ||
|| `enable_exponential_retry_backoffs` | **Type**: `bool`
**Default value**: `false`
 ||
|| `retry_backoff` | **Type**: `NYT::TExponentialBackoffOptions`
**Default value**:

```yson
{
    "backoff_jitter" = 0.1;
    "backoff_multiplier" = 1.5;
    "invocation_count" = 10;
    "max_backoff" = 5000;
    "min_backoff" = 1000;
}
```
 ||
|| `retry_timeout` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `discover_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `acknowledgement_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `rediscover_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `rediscover_splay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `hard_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `soft_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `max_peer_count` | **Type**: `int`
**Default value**: `100`
 ||
|| `hashes_per_peer` | **Type**: `int`
**Default value**: `10`
 ||
|| `min_peer_count_for_priority_awareness` | **Type**: `int`
**Default value**: `0`
 ||
|| `enable_power_of_two_choices_strategy` | **Type**: `bool`
**Default value**: `true`
 ||
|| `max_concurrent_discover_requests` | **Type**: `int`
**Default value**: `10`
 ||
|| `random_peer_eviction_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `enable_peer_polling` | **Type**: `bool`
**Default value**: `false`
 ||
|| `peer_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `peer_polling_period_splay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
 ||
|| `peer_polling_request_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `peer_priority_strategy` | **Type**: [NYT::NRpc::EPeerPriorityStrategy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_EPeerPriorityStrategy)
**Default value**: `none`
 ||
|| `discovery_session_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
 ||
|| `disable_balancing_on_single_address` | **Type**: `bool`
**Default value**: `true`
 ||
|| `hedging_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `cancel_primary_request_on_hedging` | **Type**: `bool`
**Default value**: `false`
 ||
|| `addresses` | **Type**: `std::optional<std::vector<std::string>>`
 ||
|| `endpoints` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TServiceDiscoveryEndpointsConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TServiceDiscoveryEndpointsConfig)`>`
 ||
|| `enable_watching` | **Type**: `bool`
 ||
|| `watched_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NChaosClient::TWatchedReplicationCardCacheConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NChaosClient_TWatchedReplicationCardCacheConfig)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NChaosClient_TReplicationCardCacheConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NChaosClient_TWatchedReplicationCardCacheConfig.md -->
## NYT::NChaosClient::TWatchedReplicationCardCacheConfig {#NYT_NChaosClient_TWatchedReplicationCardCacheConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/client/chaos_client/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/client/chaos_client/config.h)

#|
|| **Parameter** | **Description** ||
|| `shard_count` | **Type**: `unsigned long`
**Default value**: `1`
 ||
|| `expire_after_access_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
 ||
|| `expire_after_successful_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
 ||
|| `expire_after_failed_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `refresh_time` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `YsonEntity`
 ||
|| `expiration_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `10000`
 ||
|| `batch_update` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NChaosClient_TWatchedReplicationCardCacheConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NClient_NCache_TClientsCacheConfig.md -->
## NYT::NClient::NCache::TClientsCacheConfig {#NYT_NClient_NCache_TClientsCacheConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/client/cache/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/client/cache/config.h)

#|
|| **Parameter** | **Description** ||
|| `default_connection` | **Type**: `NYT::TIntrusivePtr<`[NYT::NApi::NRpcProxy::TConnectionConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NApi_NRpcProxy_TConnectionConfig)`>`
**Default value**: `{}`
 ||
|| `per_cluster_connection` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NApi::NRpcProxy::TConnectionConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NApi_NRpcProxy_TConnectionConfig)`>>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NClient_NCache_TClientsCacheConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NCodegen_EOptimizationLevel.md -->
## NYT::NCodegen::EOptimizationLevel {#NYT_NCodegen_EOptimizationLevel}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` |  ||
|| `default` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NCodegen_EOptimizationLevel.md -->

<!-- source: en/flow/generated_docs/NYT_NCompression_ECodec.md -->
## NYT::NCompression::ECodec {#NYT_NCompression_ECodec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` |  ||
|| `snappy` |  ||
|| `lz4` |  ||
|| `lz4_high_compression` |  ||
|| `brotli_1` |  ||
|| `brotli_2` |  ||
|| `brotli_3` |  ||
|| `brotli_4` |  ||
|| `brotli_5` |  ||
|| `brotli_6` |  ||
|| `brotli_7` |  ||
|| `brotli_8` |  ||
|| `brotli_9` |  ||
|| `brotli_10` |  ||
|| `brotli_11` |  ||
|| `zlib_1` |  ||
|| `zlib_2` |  ||
|| `zlib_3` |  ||
|| `zlib_4` |  ||
|| `zlib_5` |  ||
|| `zlib_6` |  ||
|| `zlib_7` |  ||
|| `zlib_8` |  ||
|| `zlib_9` |  ||
|| `zstd_1` |  ||
|| `zstd_2` |  ||
|| `zstd_3` |  ||
|| `zstd_4` |  ||
|| `zstd_5` |  ||
|| `zstd_6` |  ||
|| `zstd_7` |  ||
|| `zstd_8` |  ||
|| `zstd_9` |  ||
|| `zstd_10` |  ||
|| `zstd_11` |  ||
|| `zstd_12` |  ||
|| `zstd_13` |  ||
|| `zstd_14` |  ||
|| `zstd_15` |  ||
|| `zstd_16` |  ||
|| `zstd_17` |  ||
|| `zstd_18` |  ||
|| `zstd_19` |  ||
|| `zstd_20` |  ||
|| `zstd_21` |  ||
|| `lzma_0` |  ||
|| `lzma_1` |  ||
|| `lzma_2` |  ||
|| `lzma_3` |  ||
|| `lzma_4` |  ||
|| `lzma_5` |  ||
|| `lzma_6` |  ||
|| `lzma_7` |  ||
|| `lzma_8` |  ||
|| `lzma_9` |  ||
|| `bzip2_1` |  ||
|| `bzip2_2` |  ||
|| `bzip2_3` |  ||
|| `bzip2_4` |  ||
|| `bzip2_5` |  ||
|| `bzip2_6` |  ||
|| `bzip2_7` |  ||
|| `bzip2_8` |  ||
|| `bzip2_9` |  ||
|| `zstd_fast_1` |  ||
|| `zstd_fast_2` |  ||
|| `zstd_fast_3` |  ||
|| `zstd_fast_4` |  ||
|| `zstd_fast_5` |  ||
|| `zstd_fast_6` |  ||
|| `zstd_fast_7` |  ||
|| `zlib6` |  ||
|| `gzip_normal` |  ||
|| `zlib9` |  ||
|| `gzip_best_compression` |  ||
|| `zstd` |  ||
|| `brotli3` |  ||
|| `brotli5` |  ||
|| `brotli8` |  ||
|| `quick_lz` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NCompression_ECodec.md -->

<!-- source: en/flow/generated_docs/NYT_NConcurrency_EExecutionStackKind.md -->
## NYT::NConcurrency::EExecutionStackKind {#NYT_NConcurrency_EExecutionStackKind}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `small` |  ||
|| `large` |  ||
|| `huge` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NConcurrency_EExecutionStackKind.md -->

<!-- source: en/flow/generated_docs/NYT_NConcurrency_TFiberManagerConfig.md -->
## NYT::NConcurrency::TFiberManagerConfig {#NYT_NConcurrency_TFiberManagerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/concurrency/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/concurrency/config.h)

#|
|| **Parameter** | **Description** ||
|| `fiber_stack_sizes` | **Type**: `THashMap<`[NYT::NConcurrency::EExecutionStackKind](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NConcurrency_EExecutionStackKind)`, unsigned long>`
**Default value**: `{}`
 ||
|| `fiber_stack_pool_sizes` | **Type**: `THashMap<`[NYT::NConcurrency::EExecutionStackKind](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NConcurrency_EExecutionStackKind)`, int>`
**Default value**: `{}`
 ||
|| `max_idle_fibers` | **Type**: `int`
**Default value**: `5000`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NConcurrency_TFiberManagerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NConcurrency_TFiberManagerDynamicConfig.md -->
## NYT::NConcurrency::TFiberManagerDynamicConfig {#NYT_NConcurrency_TFiberManagerDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/concurrency/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/concurrency/config.h)

#|
|| **Parameter** | **Description** ||
|| `fiber_stack_sizes` | **Type**: `THashMap<`[NYT::NConcurrency::EExecutionStackKind](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NConcurrency_EExecutionStackKind)`, unsigned long>`
**Default value**: `{}`
 ||
|| `fiber_stack_pool_sizes` | **Type**: `THashMap<`[NYT::NConcurrency::EExecutionStackKind](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NConcurrency_EExecutionStackKind)`, int>`
**Default value**: `{}`
 ||
|| `max_idle_fibers` | **Type**: `std::optional<int>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NConcurrency_TFiberManagerDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NCoreDump_TCoreDumperConfig.md -->
## NYT::NCoreDump::TCoreDumperConfig {#NYT_NCoreDump_TCoreDumperConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/coredumper/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/coredumper/config.h)

#|
|| **Parameter** | **Description** ||
|| `path` | **Type**: `std::string`
**Required parameter**
 ||
|| `pattern` | **Type**: `std::string`
**Default value**: `core.%CORE_DATETIME.%CORE_PID.%CORE_SIG.%CORE_THREAD_NAME-%CORE_REASON`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NCoreDump_TCoreDumperConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NCrypto_TPemBlobConfig.md -->
## NYT::NCrypto::TPemBlobConfig {#NYT_NCrypto_TPemBlobConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/crypto/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/crypto/config.h)

#|
|| **Parameter** | **Description** ||
|| `environment_variable` | **Type**: `std::optional<std::string>`
 ||
|| `file_name` | **Type**: `std::optional<std::string>`
 ||
|| `value` | **Type**: `std::optional<std::string>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NCrypto_TPemBlobConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NCrypto_TSslContextCommand.md -->
## NYT::NCrypto::TSslContextCommand {#NYT_NCrypto_TSslContextCommand}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/crypto/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/crypto/config.h)

#|
|| **Parameter** | **Description** ||
|| `name` | **Type**: `std::string`
**Required parameter**
 ||
|| `value` | **Type**: `std::string`
**Required parameter**
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NCrypto_TSslContextCommand.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EBacktraceEnricherLevel.md -->
## NYT::NFlow::EBacktraceEnricherLevel {#NYT_NFlow_EBacktraceEnricherLevel}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `enabled_for_all` |  ||
|| `enabled_for_trivial_errors` |  ||
|| `enabled_for_not_native_errors` |  ||
|| `disabled` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EBacktraceEnricherLevel.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EBalanceResource.md -->
## NYT::NFlow::EBalanceResource {#NYT_NFlow_EBalanceResource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `cpu` |  ||
|| `memory` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EBalanceResource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EBalancerMetricsSource.md -->
## NYT::NFlow::EBalancerMetricsSource {#NYT_NFlow_EBalancerMetricsSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `job` | Only the running job's metrics: the 10-minute rate, and until it exists the 30-second and immediate ones. The previous behaviour. ||
|| `partition` | The 10-minute rate of the running job, and until it exists the partition's persisted history (measured by the previous job, survives moves and restarts). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EBalancerMetricsSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EClickHouseCodec.md -->
## NYT::NFlow::EClickHouseCodec {#NYT_NFlow_EClickHouseCodec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` | No compression. ||
|| `lz4` | LZ4 compression: minimal CPU cost at a moderate compression ratio. ||
|| `zstd` | ZSTD compression: a higher compression ratio at the cost of more CPU. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EClickHouseCodec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EClickHouseHostSelectionPolicy.md -->
## NYT::NFlow::EClickHouseHostSelectionPolicy {#NYT_NFlow_EClickHouseHostSelectionPolicy}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `ordered_round_robin` | Preserves the configured endpoint order; this is the default. ||
|| `random_start` | Chooses one uniformly distributed starting position at client construction, then preserves exhaustive round-robin endpoint iteration. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EClickHouseHostSelectionPolicy.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EDistributionOrdering.md -->
## NYT::NFlow::EDistributionOrdering {#NYT_NFlow_EDistributionOrdering}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `strict` | Output messages (created from input messages with the same key) are distributed in the order they were created. This order survives repartitioning (no race condition between stopping and running partitions that distribute outgoing messages originating from incoming messages with the same key). ||
|| `relaxed` | A race condition between stopping and running partitions is allowed. Slightly reduces message processing latency during repartitioning. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EDistributionOrdering.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EFetchType.md -->
## NYT::NFlow::EFetchType {#NYT_NFlow_EFetchType}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `select_rows` | Supports dynamic (including replicated) tables. Does not support read-ahead; queries go directly to tablet nodes (recommended option). ||
|| `table_reader` | Supports dynamic and static tables. Supports read-ahead; queries go through the master node. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EFetchType.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EFlowStateTarget.md -->
## NYT::NFlow::EFlowStateTarget {#NYT_NFlow_EFlowStateTarget}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `all` | All state categories (default). ||
|| `key_state` | Only `key_states`. ||
|| `partition_state` | Only `partition_states`. ||
|| `external_key_state` | Only external states (`external_key_states` and, for `read-states`, `joined_external_key_states`). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EFlowStateTarget.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EJobBalancerType.md -->
## NYT::NFlow::EJobBalancerType {#NYT_NFlow_EJobBalancerType}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `greedy` |  ||
|| `cpu_aware` |  ||
|| `resource_queue` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EJobBalancerType.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EPipelineState.md -->
## NYT::NFlow::EPipelineState {#NYT_NFlow_EPipelineState}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `unknown` | Default state value for a pipeline that has not been started yet. ||
|| `stopped` | Pipeline is stopped. `Draining` has been performed &mdash; all intermediate messages in the pipeline are processed, the actual processed offsets in the source queues are committed. All jobs are stopped.
In this state, you can safely roll out a pipeline release and update its static spec.
To initiate a transition to this state, use the `stop-pipeline` command. ||
|| `paused` | Pipeline is paused. All jobs are stopped, but intermediate messages in the pipeline may not have been processed.
To initiate a transition to this state, use the `pause-pipeline` command. ||
|| `working` | Pipeline is working. Messages are being processed.
To initiate a transition to this state, use the `start-pipeline` command. ||
|| `draining` | Intermediate state. Pipeline is in the process of stopping (transition to `stopped` state). All messages that the pipeline has already seen from sources and all internal intermediate messages between computations are being final-processed. ||
|| `pausing` | Intermediate state. Pipeline is in the process of pausing. All jobs are being stopped. ||
|| `completed` | Final state. Pipeline is complete. All sources were finite, and all messages from them have been processed.
It is currently not possible to exit this state; you can only recreate the pipeline. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EPipelineState.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EProcessingMode.md -->
## NYT::NFlow::EProcessingMode {#NYT_NFlow_EProcessingMode}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `exactly_once` | Default value. The result of `Transform`, including output messages, processed messages, etc., is committed to `YTsaurus` within a single transaction. All input messages are deduplicated by `message_id`. ||
|| `at_least_once_consistent` | In this mode, input message deduplication is disabled. In this mode, `TransformComputation` stops interacting with the `input_messages` table. Input messages may be processed multiple times, and the processing result is saved to `output_messages` each time and is guaranteed to be processed by subsequent `Computation` instances. This mode can be used if duplicates are not a problem, for example, because the user logic itself can deduplicate redundant messages. Duplicates can occur during any job restarts/crashes (including rescheduling). System shutdown via `draining` using `stop-pipeline`, however, does not lead to a violation of guarantees (unless jobs are restarted for some other reason during the process). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EProcessingMode.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EQueueTabletIndexRoutingHashPolicy.md -->
## NYT::NFlow::EQueueTabletIndexRoutingHashPolicy {#NYT_NFlow_EQueueTabletIndexRoutingHashPolicy}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `range` | The `uint64` hash from `tablet_index_routing_hash_expression` is reduced to contiguous equal-width hash ranges (rangeSize = 2^64 / tablet_count); recommended: a consumer range-partitioned by the same key reads only its own tablet. ||
|| `modulo` | The `uint64` hash from `tablet_index_routing_hash_expression` is reduced as `hash % tablet_count`. Discouraged: Flow computations are range-partitioned by key, so a modulo-partitioned queue forces every reader to read every tablet (a full mesh on read). Use `range` instead. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EQueueTabletIndexRoutingHashPolicy.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_ETimeType.md -->
## NYT::NFlow::ETimeType {#NYT_NFlow_ETimeType}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `event_time` |  ||
|| `system_time` |  ||
|| `current_time` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_ETimeType.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_ETimestampFormat.md -->
## NYT::NFlow::ETimestampFormat {#NYT_NFlow_ETimestampFormat}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `seconds` |  ||
|| `milli_seconds` |  ||
|| `iso8601` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_ETimestampFormat.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EUnavailableSourcePolicy.md -->
## NYT::NFlow::EUnavailableSourcePolicy {#NYT_NFlow_EUnavailableSourcePolicy}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `retry` | Default value. A source read error drops the traversal iteration; the read is retried. The traversal does not advance past the unread range. ||
|| `mark_unreadable` | A source read error is swallowed. The traversal continues, and the keys of the unread range are resolved with an uninitialized accessor (`IsInitialized() == false`). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EUnavailableSourcePolicy.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_EWorkerCoefMode.md -->
## NYT::NFlow::EWorkerCoefMode {#NYT_NFlow_EWorkerCoefMode}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `legacy` | From the current usage of each worker's partitions against the computation averages. The previous behaviour. ||
|| `probing` | From partitions that moved between workers: CPU per message before and after the move. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_EWorkerCoefMode.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NCompanion_TCompanionConfig.md -->
## NYT::NFlow::NCompanion::TCompanionConfig {#NYT_NFlow_NCompanion_TCompanionConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/companion/client/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/companion/client/config.h)

#|
|| **Parameter** | **Description** ||
|| `port` | **Type**: `int`
**Default value**: `0`
The port on which the worker talks to the companion process. The companion does not start without it. For a vanilla launch it is filled in automatically: `10082` while the worker task runs on fixed ports (`port_count = 0`), or the value of `YT_PORT_2` with `port_count = 3`. ||
|| `monitoring_port` | **Type**: `int`
**Default value**: `0`
 ||
|| `companion_process_count` | **Type**: `int`
**Default value**: `0`
 ||
|| `http_client_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NHttp::TClientConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NHttp_TClientConfig)`>`
**Default value**: `{}`
Config of the HTTP client a C++ companion hands to process functions through `IRuntimeInitContext::GetHttpClient()`. Mirrors the same-named `TFlowNodeConfig` field; companions in other languages ignore it. ||
|| `https_client_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NHttps::TClientConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NHttps_TClientConfig)`>`
**Default value**: `{}`
Config of the HTTPS client a C++ companion hands to process functions through `IRuntimeInitContext::GetHttpsClient()`. Mirrors the same-named `TFlowNodeConfig` field; companions in other languages ignore it. The config reaches the companion through the process environment. For `credentials.private_key`, only `file_name` is supported; inline and environment-backed private keys are rejected. ||
|| `http_poller_threads` | **Type**: `int`
**Default value**: `1`
Thread count of the C++ companion's HTTP poller, which runs its HTTP and HTTPS clients. Companions in other languages ignore it. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NCompanion_TCompanionConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NController_TControllerConfig.md -->
## NYT::NFlow::NController::TControllerConfig {#NYT_NFlow_NController_TControllerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/config.h)

#|
|| **Parameter** | **Description** ||
|| `controller_threads` | **Type**: `int`
**Default value**: `5`
Number of threads. ||
|| `orchid_update_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
`orchid` recalculation period. ||
|| `warm_up_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
Warm-up period when the controller starts. ||
|| `scheduler_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
Scheduler invocation period. ||
|| `cache_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `feedback_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `metrics_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `write_own_retryable_errors_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `publish_retry_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
Period during which the controller attempts to tell YTsaurus that it is the leader. ||
|| `publish_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `2h`
 ||
|| `election_manager` | **Type**: `NYT::NYTree::TPolymorphicYsonStruct<NYT::NYTree::NDetail::TPolymorphicMapping<&NYT::NFlow::NController::ElectionBackendDiscriminator.<char const at offset 0>, NYT::NFlow::NController::EElectionBackend, NYT::NYTree::NDetail::TOptionalValue<NYT::NFlow::NController::EElectionBackend, (NYT::NFlow::NController::EElectionBackend)0>, NYT::NFlow::NController::TElectionBackendConfigBase, NYT::NYTree::NDetail::TLeafTag<(NYT::NFlow::NController::EElectionBackend)0, NYT::NFlow::NController::TCypressElectionBackendConfig>, NYT::NYTree::NDetail::TLeafTag<(NYT::NFlow::NController::EElectionBackend)1, NYT::NFlow::NController::TDyntableElectionBackendConfig>, NYT::NYTree::NDetail::TLeafTag<(NYT::NFlow::NController::EElectionBackend)2, NYT::NFlow::NController::TChaosElectionBackendConfig>>>`
**Default value**:

```yson
{
    "backend" = "cypress";
    "leader_cache_update_period" = 1000;
    "leader_lease_ping_period" = 1000;
    "leader_lease_ttl" = 5000;
    "lock_acquisition_period" = 1000;
}
```
Leader election settings for multiple controllers. ||
|| `persisted_state_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NController::TPersistedStateManagerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NController_TPersistedStateManagerConfig)`>`
**Default value**: `{}`
`PersistedStateManager` settings. ||
|| `lease_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NController::TLeaseManagerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NController_TLeaseManagerConfig)`>`
**Default value**: `{}`
`LeaseManager` settings. ||
|| `controller_service` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NController::TControllerServiceConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NController_TControllerServiceConfig)`>`
**Default value**: `{}`
`ControllerService` settings. ||
|| `bus` | **Type**: `NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TBusConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TBusConfig)`>`
**Default value**: `{}`
 ||
|#


{% cut "**Additional parameters**" %}


#|
|| `publish_request_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Timeout of a single request of a publication attempt. A failed attempt is retried, so this only decides how long one attempt may hang before the retry. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NController_TControllerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NController_TControllerServiceConfig.md -->
## NYT::NFlow::NController::TControllerServiceConfig {#NYT_NFlow_NController_TControllerServiceConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/config.h)

#|
|| **Parameter** | **Description** ||
|| `set_spec_retry_count` | **Type**: `int`
**Default value**: `3`
Number of attempts to update the spec in case of errors. ||
|| `set_spec_retry_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
Time between attempts. ||
|| `tables_throttler` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TLoadThroughputThrottlerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TLoadThroughputThrottlerSpec)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NController_TControllerServiceConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NController_TLeaseManagerConfig.md -->
## NYT::NFlow::NController::TLeaseManagerConfig {#NYT_NFlow_NController_TLeaseManagerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/config.h)

#|
|| **Parameter** | **Description** ||
|| `lease_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
How long a job stays fenced without the controller refreshing the fence. With the Cypress election backend this is the timeout of the job's master lease transaction, with the chaos one the timeout of its chaos lease, and with the dyntable one the ttl of the pipeline-wide deadline row that gates every worker commit. ||
|| `lease_ping_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
Period at which the leader prolongs the leases. Every backend prolongs from the leader and none from the worker, but the machinery differs: the chaos leases are pinged by one periodic executor, the Cypress ones by a client-side pinger per lease transaction, and the shared dyntable deadline is simply rewritten. ||
|| `max_concurrent_requests` | **Type**: `long`
**Default value**: `500`
Maximum number of concurrent requests the manager keeps in flight when it attaches to leases or terminates them. Do not increase to avoid overloading the master. Prolongation is not capped by it: the chaos pings are dispatched in one fire-and-forget round, and the Cypress ones belong to the lease transactions themselves. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NController_TLeaseManagerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NController_TPersistedStateManagerConfig.md -->
## NYT::NFlow::NController::TPersistedStateManagerConfig {#NYT_NFlow_NController_TPersistedStateManagerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/config.h)

#|
|| **Parameter** | **Description** ||
|| `timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
Save timeout in YTsaurus. ||
|| `max_reads_per_transaction` | **Type**: `long`
**Default value**: `10000`
 ||
|| `max_writes_per_transaction` | **Type**: `long`
**Default value**: `10000`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NController_TPersistedStateManagerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NDeltaCodecs_ECodec.md -->
## NYT::NFlow::NDeltaCodecs::ECodec {#NYT_NFlow_NDeltaCodecs_ECodec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` |  ||
|| `x_delta` |  ||
|| `v_c_diff` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NDeltaCodecs_ECodec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NFileStorage_TFileStorageConfig.md -->
## NYT::NFlow::NFileStorage::TFileStorageConfig {#NYT_NFlow_NFileStorage_TFileStorageConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/file_storage/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/file_storage/config.h)

#|
|| **Parameter** | **Description** ||
|| `path` | **Type**: `std::string`
**Required parameter**
Exact absolute cache root for one worker process. Flow does not append a pipeline, operation, or job-cookie identifier. The worker holds an exclusive nonblocking lock on `<path>/.lock` and fails at startup if the same physical root is already in use. ||
|| `soft_size_limit` | **Type**: `long`
**Required parameter**
Target total size of managed payload files and not-yet-deleted trash in bytes after LRU cleanup of unpinned objects. ||
|| `hard_size_limit` | **Type**: `long`
**Required parameter**
Admission limit in bytes for managed payload files, not-yet-deleted trash, and expected-size reservations, including pinned objects. It is not a physical volume quota and cannot strictly cover unknown or misreported staging sizes and filesystem overhead. ||
|| `cleanup_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Period between background cache reconciliation and cleanup of unpinned objects toward `soft_size_limit`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NFileStorage_TFileStorageConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NStaticTableConnector_TTableTimestampLocatorSpec.md -->
## NYT::NFlow::NStaticTableConnector::TTableTimestampLocatorSpec {#NYT_NFlow_NStaticTableConnector_TTableTimestampLocatorSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/connectors/static_table/source_spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/connectors/static_table/source_spec.h)

#|
|| **Parameter** | **Description** ||
|| `attribute` | **Type**: `std::string`
**Required parameter**
 ||
|| `format` | **Type**: [NYT::NFlow::ETimestampFormat](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_ETimestampFormat)
**Default value**: `iso8601`
 ||
|| `timezone` | **Type**: `std::optional<std::string>`
Optional IANA time zone used to interpret ISO 8601 timestamps without an explicit UTC offset. Explicit offsets take precedence. The parameter can only be used with `format=iso8601`. If omitted, timestamps without an offset are interpreted as UTC for backward compatibility. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NStaticTableConnector_TTableTimestampLocatorSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_NWorker_TWorkerConfig.md -->
## NYT::NFlow::NWorker::TWorkerConfig {#NYT_NFlow_NWorker_TWorkerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/worker/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/worker/config.h)

#|
|| **Parameter** | **Description** ||
|| `bus` | **Type**: `NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TBusConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TBusConfig)`>`
**Default value**: `{}`
 ||
|| `message_service_threads` | **Type**: `int`
**Default value**: `3`
 ||
|| `file_storage` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NFileStorage::TFileStorageConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NFileStorage_TFileStorageConfig)`>`
Optional persistent local cache for raw file-resource payloads. It is required when this worker loads a file resource. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_NWorker_TWorkerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TAtMostOnceStrategyDynamicParameters.md -->
## NYT::NFlow::TAtMostOnceStrategyDynamicParameters {#NYT_NFlow_TAtMostOnceStrategyDynamicParameters}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/connectors/common/async_at_most_once_sink_base.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/connectors/common/async_at_most_once_sink_base.h)

#|
|| **Parameter** | **Description** ||
|| `suspend_destruction_duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
 ||
|| `total_queue_bytes_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `100Mi`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TAtMostOnceStrategyDynamicParameters.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TAtMostOnceStrategyParameters.md -->
## NYT::NFlow::TAtMostOnceStrategyParameters {#NYT_NFlow_TAtMostOnceStrategyParameters}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/connectors/common/async_at_most_once_sink_base.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/connectors/common/async_at_most_once_sink_base.h)

#|
|| **Parameter** | **Description** ||
|| `enabled` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TAtMostOnceStrategyParameters.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TAuthenticatorConfig.md -->
## NYT::NFlow::TAuthenticatorConfig {#NYT_NFlow_TAuthenticatorConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/authenticator.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/authenticator.h)

#|
|| **Parameter** | **Description** ||
|| `require_proxy_signature` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TAuthenticatorConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TBacktraceEnricherDynamicSpec.md -->
## NYT::NFlow::TBacktraceEnricherDynamicSpec {#NYT_NFlow_TBacktraceEnricherDynamicSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/misc/error_backtrace_enricher.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/misc/error_backtrace_enricher.h)

#|
|| **Parameter** | **Description** ||
|| `level` | **Type**: `std::optional<`[NYT::NFlow::EBacktraceEnricherLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBacktraceEnricherLevel)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TBacktraceEnricherDynamicSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TBacktraceEnricherSpec.md -->
## NYT::NFlow::TBacktraceEnricherSpec {#NYT_NFlow_TBacktraceEnricherSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/misc/error_backtrace_enricher.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/misc/error_backtrace_enricher.h)

#|
|| **Parameter** | **Description** ||
|| `level` | **Type**: [NYT::NFlow::EBacktraceEnricherLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBacktraceEnricherLevel)
**Default value**: `disabled`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TBacktraceEnricherSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TComputationSpec.md -->
## NYT::NFlow::TComputationSpec {#NYT_NFlow_TComputationSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `computation_class_name` | **Type**: `std::string`
**Required parameter**
The built-in Computation or process-function adapter class name.

For new C++ user logic, select one of the built-in `TProcessFunction*Computation` adapters. Register the function with `YT_FLOW_DEFINE_PROCESS_FUNCTION` and name it in `processing_function`. Don’t create custom Computation classes. ||
|| `processing_function` | **Type**: `std::optional<std::string>`
The fully qualified process-function name registered with `YT_FLOW_DEFINE_PROCESS_FUNCTION`. Required by `TProcessFunction*Computation` adapters. ||
|| `processing_function_parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
Static process-function parameters. Their type is declared in `YT_FLOW_DEFINE_PROCESS_FUNCTION` registration. ||
|| `group_by_schema` | **Type**: `NYT::TIntrusivePtr<NYT::NTableClient::TTableSchema>`
**Default value**: `{'value': [], 'attributes': {'strict': true, 'unique_keys': false}}`
A schema for grouping all input streams. It is a dynamic table schema. Schema properties and requirements:

* Does not contain any ordering rules.
* Can contain computed fields.
* Must be empty only for `SourceComputation`.
* For other `Computation` instances, the first column must be of type `uint64`. It is recommended that this column be a computed hash of the other columns (for example, `farm_hash`). Note that using the modulo operator `%` and `bigb_hash` in `expression` is prohibited. ||
|| `experimental_enable_non_uint_key` | **Type**: `std::optional<bool>`
 ||
|| `input_stream_ids` | **Type**: `THashSet<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>>`
**Default value**: `[]`
Input streams.

The schemas of all streams must be castable to `group_by_schema`. ||
|| `output_stream_ids` | **Type**: `THashSet<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>>`
**Default value**: `[]`
Output streams of the Computation. They can be used as inputs for other Computations. ||
|| `streams_dependency` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, THashSet<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>>>`
**Default value**: `{}`
A description of dependencies between streams, including internal `source` and `timer` streams.

Example: `{stream1, {stream2, stream3}}` &mdash; `stream1` depends on streams `stream2` and `stream3`.

Specified only for `timer` and `output` streams. If no description is provided for a stream, the dependency list is auto-generated:

* for `timer` streams, the list includes all `input` and `source` streams;
* for `output` streams, the list includes all `timer`, `input`, and `source` streams. ||
|| `watermark_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TWatermarkStrategySpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TWatermarkStrategySpec)`>`
**Default value**: `{}`
Settings related to `EventWatermark`.

An optional parameter. Must be specified within `SourceComputation`. ||
|| `required_resource_ids` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TResourceIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TResourceDescription](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TResourceDescription)`>>`
**Default value**: `{}`
A list of resources required for the `Computation` to work.

Has an `alias` parameter for locally renaming a resource (for example, `Computation` expects a resource named `YTClient`, but the provided resource has a different name). The `controller` and `worker` parameters control whether the resource is created on the `Controller` or on the `Worker`. ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Custom parameters for `Computation` and `ComputationController`. ||
|| `timer_streams` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TTimerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TTimerSpec)`>>`
**Default value**: `{}`
Settings for all `timer` streams. Keys must match `[0-9A-Za-z_-]+`. ||
|| `key_visitor_streams` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TKeyVisitorStreamSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TKeyVisitorStreamSpec)`>>`
**Default value**: `{}`
Settings for all `key_visitor` streams. Keys must match `[0-9A-Za-z_-]+`. ||
|| `source_streams` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TSourceSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TSourceSpec)`>>`
**Default value**: `{}`
Settings for all `source` streams. Keys must match `[0-9A-Za-z_-]+`. ||
|| `sinks` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TSinkIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TSinkSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TSinkSpec)`>>`
**Default value**: `{}`
Settings for all sinks. Keys must match `[0-9A-Za-z_-]+`. ||
|| `external_state_managers` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NFlow::TExternalStateManagerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TExternalStateManagerSpec)`>>`
**Default value**: `{}`
A declarative declaration of [external state](https://ytsaurus.tech/docs/en/flow/cpp/state.md#external-state) managers for this `Computation`. The key is the client name that the process function passes to `InitExternalStateClient` (must start with `/`, for example `/state`); the value contains the manager class name and its parameters. ||
|| `external_state_joiners` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NFlow::TExternalStateJoinerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TExternalStateJoinerSpec)`>>`
**Default value**: `{}`
A declarative declaration of [external state](https://ytsaurus.tech/docs/en/flow/cpp/state.md#external-state-joiner) joiners (read-only access to external states via key join) for this `Computation`. The key is the client name that the process function passes to `InitExternalStateClient` (must start with `/`, for example `/state`); the value contains the joiner class name and its parameters. ||
|| `state_joiners` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NFlow::TStateJoinerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TStateJoinerSpec)`>>`
**Default value**: `{}`
A declarative declaration of [state](https://ytsaurus.tech/docs/en/flow/cpp/state.md#state-joiner) joiners (read-only access to the internal state of another `Computation` via key join) for this `Computation`. The key is the client name that the process function passes to `InitClient` (must start with `/`); the value specifies the target `computation_id`, its `state_name`, and `join_on`. ||
|| `heavy_hitters` | **Type**: [NYT::NFlow::THeavyHittersSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_THeavyHittersSpec)
**Default value**: `{}`
Settings for detecting high-frequency keys. ||
|| `pivot_finder` | **Type**: [NYT::NFlow::TPivotFinderSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TPivotFinderSpec)
**Default value**: `{}`
 ||
|| `input_ordering` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TInputOrderingSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TInputOrderingSpec)`>`
**Default value**: `{}`
Settings for the processing order of input streams. ||
|| `distribution_ordering` | **Type**: [NYT::NFlow::EDistributionOrdering](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EDistributionOrdering)
**Default value**: `strict`
Settings for the distribution order of output messages. Controls whether a race condition is possible between stopping and running partitions from the perspective of the order of output messages generated from input messages with the same key. ||
|| `worker_group` | **Type**: `NYT::TStrongTypedef<std::string, NYT::NFlow::TWorkerGroupIdTag, NYT::TStrongTypedefOptions{true}>`
**Default value**: `TString("")`
 ||
|| `allow_timer_self_dependency` | **Type**: `bool`
**Default value**: `false`
 ||
|| `use_compact_input_messages` | **Type**: `std::optional<bool>`
Use the `compact_input_messages` table for [input message deduplication](https://ytsaurus.tech/docs/en/flow/concepts/guarantees.md) instead of `input_messages`. The compact deduplication key stores only the hash of `key[0]` and `CityHash128(message_id)`, which reduces the row size (~200 bytes → ~71 bytes).

An optional parameter. If not set, the table is chosen automatically: the compact table is always used except when `experimental_enable_non_uint_key` is enabled (in that case, the first key column may not be `uint64`, and deduplication requires the full key). An explicitly set value takes priority over automatic selection. Enabling `use_compact_input_messages` together with `experimental_enable_non_uint_key` is prohibited. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TComputationSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDeleteStatesArg.md -->
## NYT::NFlow::TDeleteStatesArg {#NYT_NFlow_TDeleteStatesArg}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

Argument of the `delete-states` command.

The same three modes as in [TReadStatesArg](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TReadStatesArg) are supported.

By default, it is a dry run: the request returns counters of matched rows without deleting anything. For actual deletion, you must pass `commit=true`.

The command requires the pipeline to be in `Stopped`/`Completed` state, or `force=true` when in `Paused`. Only key/partition/manager states are deleted; joiner states are left untouched.

#|
|| **Parameter** | **Description** ||
|| `computation_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>>`
ID of the Computation. Required for modes 1 and 2 (see the command description). ||
|| `partition_id` | **Type**: `std::optional<NYT::TStrongTypedef<NYT::TGuid, NYT::NFlow::TPartitionIdTag, NYT::TStrongTypedefOptions{true}>>`
Partition ID. Required for mode 3 (see the command description). ||
|| `key` | **Type**: `std::optional<NYT::NYson::TYsonString>`
Key for point lookup (mode 2). Accepted in two forms:

* **YSON Dict** `{column = value; ...}` &mdash; for each target table (`key_states` of the Computation and each table of the external_state_manager/joiner with its own `key_schema_override`) the dict is decomposed by its key schema; columns absent from the schema are ignored.
* **YSON List** of positional values &mdash; passed to tables as-is, without adaptation to their schema. ||
|| `name` | **Type**: `std::optional<std::string>`
Filter by exact state name; applies to all sections (key/partition/external). If set, only rows with this state name are returned in each section. ||
|| `target` | **Type**: [NYT::NFlow::EFlowStateTarget](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EFlowStateTarget)
**Default value**: `all`
Which categories of states to request. Default: `all`. ||
|| `force` | **Type**: `bool`
**Default value**: `false`
Allows deletion on a pipeline in `Paused` state. Without `force`, the command requires `Stopped`/`Completed`. ||
|| `commit` | **Type**: `bool`
**Default value**: `false`
If `true`, the found rows are actually deleted. Otherwise, the request works in dry-run mode and only counts them. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDeleteStatesArg.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDeleteStatesResponse.md -->
## NYT::NFlow::TDeleteStatesResponse {#NYT_NFlow_TDeleteStatesResponse}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

Response of the `delete-states` command.

#|
|| **Parameter** | **Description** ||
|| `committed` | **Type**: `bool`
**Required parameter**
Reflects the `commit` value from the request argument. If `errors` contains entries, some matched rows might not have been deleted &mdash; exact counters are not provided; in practice, the state must be re-read via `read-states`. ||
|| `matched_states` | **Type**: [NYT::NFlow::TMatchedStates](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TMatchedStates)
**Required parameter**
Counters of matched rows by category. Always populated: both in dry-run mode (shows what would have been deleted) and with `commit=true` (shows what was deleted or attempted to be deleted). See [TMatchedStates](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TMatchedStates). ||
|| `errors` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Errors that occurred while forming the response to the request itself (for example, a `Sync` manager failure). These are not related to errors in the pipeline's work with the state. If such an error occurred for one of the external states, other categories can still be processed successfully. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDeleteStatesResponse.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDirectControllerCommandsConfig.md -->
## NYT::NFlow::TDirectControllerCommandsConfig {#NYT_NFlow_TDirectControllerCommandsConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/pipeline_helpers/flow_execute/flow_execute.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/pipeline_helpers/flow_execute/flow_execute.h)

#|
|| **Parameter** | **Description** ||
|| `enabled` | **Type**: `bool`
**Default value**: `false`
 ||
|| `rpc_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDirectControllerCommandsConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicBufferStateManagerSpec.md -->
## NYT::NFlow::TDynamicBufferStateManagerSpec {#NYT_NFlow_TDynamicBufferStateManagerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `manage_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Frequency of buffer size recalculation. ||
|| `demand_window` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Time window over which the utilization of a single buffer is estimated. ||
|| `input_buffer` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicBufferStateManagerSpec::TOneSideBufferSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicBufferStateManagerSpec_TOneSideBufferSpec)`>`
**Default value**: `{}`
Input buffer settings. ||
|| `output_buffer` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicBufferStateManagerSpec::TOneSideBufferSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicBufferStateManagerSpec_TOneSideBufferSpec)`>`
**Default value**: `{}`
Output buffer settings. ||
|| `enable_v2` | **Type**: `bool`
**Default value**: `true`
Enables the v2 buffer-sizing strategy: limit = peak usage + headroom, with a `v2_gain_epochs × demand × epoch` bandwidth-delay-product floor. The `demand × max_duration` cap is raised by announced input backlog or, for a producing output, to an equal share of half `fair_share_pool` because producer epochs do not reveal the downstream acknowledgement period. Demand-backed limits are allocated before speculative output probes. On both sides, Σ(limits) ≤ `fair_share_pool` including other streams' in-flight bytes; `job_limit` remains the per-stream bound. Streams with `job_overrides` remain fully outside the pool as in v1, so worker buffer memory should cover `fair_share_pool` plus the actual in-flight bytes of overridden streams. Enabled by default; set this option to `false` to use the previous v1 formula. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `epoch_cycle_window_samples` | **Type**: `int`
**Default value**: `16`
Number of samples in the window used to estimate the median job epoch cycle. ||
|| `max_rate_estimator_buckets` | **Type**: `int`
**Default value**: `8`
Number of buckets in the windowed-max drain-rate estimator; changing it resets the estimate. ||
|| `warmup_refresh_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
How often a job polls the converged warmup state for persistence. ||
|| `v2_gain_epochs` | **Type**: `double`
**Default value**: `2.0`
Minimum buffer target in units of job epochs, used as a bandwidth-delay-product floor. Applies only when `enable_v2` is set. ||
|| `v2_use_offered_rate` | **Type**: `bool`
**Default value**: `true`
Whether announced backlog rate contributes to demand. Disable it when a producer systematically overstates its offered rate. Applies only when `enable_v2` is set. ||
|| `v2_floor` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `2Mi`
Minimum grant for a stream with backlog; it must fit the largest message. Applies only when `enable_v2` is set. ||
|| `v2_headroom_growth_factor` | **Type**: `double`
**Default value**: `2.0`
Headroom growth factor per management tick while utilization is high. Applies only when `enable_v2` is set. ||
|| `v2_high_utilization_threshold` | **Type**: `double`
**Default value**: `0.65`
Utilization threshold above which headroom grows; below half this value headroom decays. Applies only when `enable_v2` is set. ||
|| `v2_publish_threshold` | **Type**: `double`
**Default value**: `0.25`
Suppress a new limit when its relative increase is smaller than this value; decreases are always published. Applies only when `enable_v2` is set. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicBufferStateManagerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicBufferStateManagerSpec_TOneSideBufferSpec.md -->
## NYT::NFlow::TDynamicBufferStateManagerSpec::TOneSideBufferSpec {#NYT_NFlow_TDynamicBufferStateManagerSpec_TOneSideBufferSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `fair_share_pool` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `3Gi`
Pool size for distribution using the FairShare algorithm based on utilization. ||
|| `worker_group_fair_share_pool_overrides` | **Type**: `THashMap<NYT::TStrongTypedef<std::string, NYT::NFlow::TWorkerGroupIdTag, NYT::TStrongTypedefOptions{true}>, `[NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)`>`
**Default value**: `{}`
Replaces `fair_share_pool` for workers in the listed [worker groups](https://ytsaurus.tech/docs/en/flow/concepts/worker_groups.md), for installations where some workers have substantially more memory. A worker in several listed groups uses the maximum value, so the pool reflects the memory actually available to that worker. ||
|| `job_guarantee` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `5Mi`
Minimum buffer size for a single job. ||
|| `job_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `500Mi`
Maximum buffer size for a single job. ||
|| `max_duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Assume that a buffer need not hold more than `max_duration` of job work (the rate is estimated heuristically). With `enable_v2`, it also caps the measured job epoch-cycle estimate. A producing output may probe up to its equal share of half `fair_share_pool` because producer epochs do not reveal the downstream acknowledgement period. `job_limit` and the worker pool remain hard bounds. ||
|| `job_overrides` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>, THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, `[NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)`>>`
**Default value**: `{}`
Ability to manually override the buffer size for a computation stream. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicBufferStateManagerSpec_TOneSideBufferSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicComputationSpec.md -->
## NYT::NFlow::TDynamicComputationSpec {#NYT_NFlow_TDynamicComputationSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `batch_duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Maximum time to collect an input batch. ||
|| `max_rows_per_batch` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `1K`
Maximum size of an input batch in rows. Calculated separately for `input_streams`, `timer_streams`, and for each of the `source_streams`. ||
|| `max_bytes_per_batch` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10Mi`
Maximum size of an input batch in bytes. Calculated similarly to `max_rows_per_batch`. ||
|| `max_keys_per_batch` | **Type**: `std::optional<`[NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)`>`
 ||
|| `draining` | **Type**: `bool`
**Default value**: `false`
The `Draining` mode is used to drain the pipeline. In this mode, the `Computation` stops running timers and fetching new events from the `Source`.

The `stop-pipeline` command stops the entire pipeline through a full drain. You can set this mode for individual `Computation` nodes for debugging. ||
|| `empty_batch_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `250ms`
If the epoch is empty, the `Computation` sleeps for the specified additional time. We do not recommend setting this parameter to less than 100 ms. ||
|| `lease_check_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `retryable_request` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicRetryableRequestSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicRetryableRequestSpec)`>`
**Default value**: `{}`
 ||
|| `tracer` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicPartitionTracerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicPartitionTracerSpec)`>`
**Default value**: `{}`
 ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Arbitrary dynamic parameters of the `Computation` class. ||
|| `processing_function_parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
Dynamic process-function parameters. Their type is declared in `YT_FLOW_DEFINE_PROCESS_FUNCTION` registration. ||
|| `source_streams` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicSourceSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicSourceSpec)`>>`
**Default value**: `{}`
Dynamic parameters of all `Sources`. ||
|| `key_visitor_streams` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicKeyVisitorStreamSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicKeyVisitorStreamSpec)`>>`
**Default value**: `{}`
 ||
|| `sinks` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TSinkIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicSinkSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicSinkSpec)`>>`
**Default value**: `{}`
Dynamic parameters of all `Sinks`. ||
|| `external_state_managers` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicExternalStateManagerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicExternalStateManagerSpec)`>>`
**Default value**: `{}`
 ||
|| `external_state_joiners` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicExternalStateJoinerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicExternalStateJoinerSpec)`>>`
**Default value**: `{}`
 ||
|| `state_joiners` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicStateJoinerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicStateJoinerSpec)`>>`
**Default value**: `{}`
 ||
|| `state_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicStateManagerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicStateManagerSpec)`>`
**Default value**: `{}`
 ||
|| `input_store` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicInputStoreSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicInputStoreSpec)`>`
**Default value**: `{}`
 ||
|| `timer_store` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicTimerStoreSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicTimerStoreSpec)`>`
**Default value**: `{}`
 ||
|| `output_store` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicOutputStoreSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicOutputStoreSpec)`>`
**Default value**: `{}`
 ||
|| `timer_store_count_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `250K`
 ||
|| `timer_store_byte_size_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `100Mi`
 ||
|| `output_store_count_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `1G`
 ||
|| `output_store_byte_size_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `100Gi`
 ||
|| `blocked_time_window` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
Averaging window for the share of time the job spent blocked on each limit (`blocked_share` in diagnostics). The share is normalized to the job lifetime, so a job blocked from the start shows `~1` regardless of its age. ||
|| `input_rows_throttler_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TThrottlerIdTag>>`
Throttler ID for limiting the message processing rate. If set, before each iteration the `Computation` waits for a quota equal to the number of messages in the input batch. The ID must be present in `dynamic_spec/throttlers`. For more information, see [Distributed Throttler](https://ytsaurus.tech/docs/en/flow/concepts/distributed_throttler.md). ||
|| `input_bytes_throttler_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TThrottlerIdTag>>`
Similar to `input_rows_throttler_id`, but quotas the total `byte_size` of messages in the batch &mdash; the system size of their serialized representation. ||
|| `input_rows_throttler_class_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TQuotaClassIdTag>>`
Quota class for the `input_rows_throttler_id` throttler. The class must be declared by that throttler; `default` selects the reserved class with weight `1.0`. Requires `input_rows_throttler_id` to be set. ||
|| `input_bytes_throttler_class_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TQuotaClassIdTag>>`
Quota class for the `input_bytes_throttler_id` throttler. The class must be declared by that throttler; `default` selects the reserved class with weight `1.0`. Requires `input_bytes_throttler_id` to be set. ||
|| `skip_if_expression` | **Type**: `std::optional<std::string>`
YTQL predicate for filtering (skipping) input messages before `Computation` processing. A message is skipped (dropped) if the predicate evaluates to boolean `true`.

The predicate is evaluated on the message `payload` columns plus the meta-columns `$message_id`, `$stream_id`, `$system_timestamp`, `$event_timestamp`, `$alignment_timestamp`. The result must be boolean: `NULL` or a non-boolean result causes an exception.

Applies to both `input` and `source` streams. The number of skipped messages is exported via the `input_streams/skipped_by_expression_count` and `source_streams/skipped_by_expression_count` metrics. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicComputationSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicControllerConnectorSpec.md -->
## NYT::NFlow::TDynamicControllerConnectorSpec {#NYT_NFlow_TDynamicControllerConnectorSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `controller_wait_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Time after which the worker forcibly disconnects all jobs in case of loss of connection with the controller. ||
|| `controller_discover_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Period for rediscovering the controller. ||
|| `controller_heartbeat_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Period of worker heartbeats to the controller. ||
|| `worker_statistics_report_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `controller_heartbeat_rpc_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Heartbeat timeout. ||
|| `controller_heartbeat_failure_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Backoff time in case of handshake failure. ||
|| `controller_handshake_rpc_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Handshake timeout. ||
|| `controller_handshake_failure_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `orchid_update_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Period for updating `orchid` on the controller. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicControllerConnectorSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicExpiringJobNamedStateCacheSpec.md -->
## NYT::NFlow::TDynamicExpiringJobNamedStateCacheSpec {#NYT_NFlow_TDynamicExpiringJobNamedStateCacheSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/state_cache.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/state_cache.h)

#|
|| **Parameter** | **Description** ||
|| `ttl` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `0`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicExpiringJobNamedStateCacheSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicExternalStateJoinerSpec.md -->
## NYT::NFlow::TDynamicExternalStateJoinerSpec {#NYT_NFlow_TDynamicExternalStateJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
Dynamic parameters of the specific joiner implementation. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicExternalStateJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicExternalStateManagerSpec.md -->
## NYT::NFlow::TDynamicExternalStateManagerSpec {#NYT_NFlow_TDynamicExternalStateManagerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
Dynamic parameters of the specific manager implementation. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicExternalStateManagerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicFileProviderSpec.md -->
## NYT::NFlow::TDynamicFileProviderSpec {#NYT_NFlow_TDynamicFileProviderSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/file_provider.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/file_provider.h)

#|
|| **Parameter** | **Description** ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Dynamic parameters of the registered file-provider implementation. They select future revisions during discovery but do not change an exact revision that has already been delivered. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicFileProviderSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicInputStoreSpec.md -->
## NYT::NFlow::TDynamicInputStoreSpec {#NYT_NFlow_TDynamicInputStoreSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

**This structure has no main parameters.**
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicInputStoreSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicJobManagerGroupSpec.md -->
## NYT::NFlow::TDynamicJobManagerGroupSpec {#NYT_NFlow_TDynamicJobManagerGroupSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `balancer_type` | **Type**: [NYT::NFlow::EJobBalancerType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EJobBalancerType)
**Default value**: `cpu_aware`
 ||
|| `use_cpu_aware_balancer` | **Type**: `std::optional<bool>`
Enables experimental CPU-aware balancing. Default balancing can lead to severe CPU resource imbalance among workers. ||
|| `rebalance_delay_after_pipeline_sync` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `rebalance_target_deviation` | **Type**: `double`
**Default value**: `0.1`
Maximum acceptable deviation. ||
|| `rebalance_hot_mode_coeff` | **Type**: `double`
**Default value**: `2.0`
 ||
|| `rebalance_action_min_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `4s`
 ||
|| `rebalance_action_max_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `12s`
 ||
|| `rebalance_sync_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Period of `cpu_aware` balancing. It is not recommended to set a value lower than `15min` because the balancer looks at `10min` metrics. ||
|| `rebalance_count_exceeded_allowed` | **Type**: `double`
**Default value**: `1.2`
 ||
|| `rebalance_even_load_thresholds` | **Type**: `THashMap<`[NYT::NFlow::EBalanceResource](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBalanceResource)`, NYT::TIntrusivePtr<`[NYT::NFlow::TEvenLoadThresholds](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TEvenLoadThresholds)`>>`
**Default value**: `{}`
Per-resource thresholds of the "load is even" gate, for example `{cpu = {spread = 2.0; ratio = 1.5}}`. Only resources with a non-zero weight are consulted. Unset fields fall back to the defaults: a spread of `1.0` core for CPU and `1 GB` for memory, a ratio of `1.2`. ||
|| `rebalance_min_cpu_spread` | **Type**: `std::optional<double>`
Deprecated: the same as `spread` of the `cpu` entry of `rebalance_even_load_thresholds`. A value set explicitly in `rebalance_even_load_thresholds` takes precedence. ||
|| `rebalance_min_cpu_ratio` | **Type**: `std::optional<double>`
Deprecated: the same as `ratio` of the `cpu` entry of `rebalance_even_load_thresholds`. A value set explicitly in `rebalance_even_load_thresholds` takes precedence. ||
|| `balance_weights` | **Type**: `THashMap<`[NYT::NFlow::EBalanceResource](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBalanceResource)`, double>`
**Default value**: `{'cpu': 1.0, 'memory': 0.0}`
Relative importance of the resources for `cpu_aware` balancing, for example `{cpu = 80; memory = 20}`. The given keys are merged into the default `{cpu = 1; memory = 0}`; the weights are normalized, so only the proportions matter. A resource with a zero weight does not take part in balancing, so by default only CPU is balanced. The `rebalance_target_deviation` threshold applies to the normalized weighted sum: adding a second resource proportionally shrinks the contribution of the first one. ||
|| `balancer_metrics_source` | **Type**: [NYT::NFlow::EBalancerMetricsSource](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBalancerMetricsSource)
**Default value**: `job`
Where the `cpu_aware` balancer takes a partition's CPU usage from. `partition`: the 10-minute rate of the running job, and until it exists the partition's persisted history (measured by the previous job, survives moves and restarts); 30-second and immediate rates are never used. `job`: the previous behaviour, only the running job's metrics with a fallback to the 30-second and immediate rates. Off by default while the change is rolled out pipeline by pipeline; temporary switch. ||
|| `balance_warmup_protection` | **Type**: `bool`
**Default value**: `false`
Never move a running job whose metrics are not mature yet: the 10-minute rate exists and one more 10-minute window has passed since it appeared. Such a job is still paying for its previous move and its weight is unknown. The protection applies to every balancing resource: a memory-only configuration waits for the CPU rate to mature as well. A worker over the count limit whose kick candidate is immature is skipped for the round. Jobs younger than two minutes stay movable: they have invested nothing yet, and on a pipeline restart the workers do not register all at once. Partitions without a job are placed as usual. Off by default while the change is rolled out pipeline by pipeline; temporary switch. ||
|| `balance_warmup_idle_worker_share` | **Type**: `double`
**Default value**: `0.2`
Share of the group's workers without a job of the group at which warm-up protection is lifted: filling idle workers matters more than the metrics of the jobs that would move, e.g. when workers register minutes apart after a pipeline restart. Temporary switch for rollback. ||
|| `worker_coef_mode` | **Type**: [NYT::NFlow::EWorkerCoefMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EWorkerCoefMode)
**Default value**: `legacy`
How the `cpu_aware` balancer estimates the relative speed of workers. `probing`: from partitions that moved between workers, comparing CPU per message before and after the move; observations per worker pair accumulate in `balancer_state` and are solved together; without moves all coefficients are 1. `legacy`: the previous estimate from the current usage of each worker's partitions against the computation averages. Off by default while the change is rolled out pipeline by pipeline; temporary switch. ||
|| `worker_coef_half_life` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
Half-life of an accumulated worker-pair observation: when a new observation merges in, the old one loses weight in proportion to the time passed. Without new observations the estimate does not change. ||
|| `worker_coef_retention` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `7d`
How long the observations of a worker absent from the group are kept; a worker returning earlier gets its coefficient back. ||
|| `worker_coef_prior_weight` | **Type**: `double`
**Default value**: `0.05`
Weight of the prior "the worker's coefficient is 1" in observation weight units (a move of one partition weighs `1 / N`, `N` being the number of partitions on the receiving worker). Pins the group's mean coefficient to 1 and damps single observations. ||
|| `worker_coef_max_ratio` | **Type**: `double`
**Default value**: `4.0`
Safety limit: worker coefficients are clamped to `[1 / max_ratio, max_ratio]`. ||
|| `disable_even_load_gate` | **Type**: `std::optional<bool>`
 ||
|| `async_balancing` | **Type**: `bool`
**Default value**: `true`
 ||
|| `graceful_move` | **Type**: `bool`
**Default value**: `true`
 ||
|| `zero_queue_latency` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `planning_horizon` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
 ||
|| `preloading_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30m`
How long the `resource_queue` balancer keeps a model preload that is still loading, counted from the request. Until then the preload is not released and the worker counts as a worker of the computations that need the model; after it the usual rules apply. ||
|| `minimum_worker_count` | **Type**: `unsigned long`
**Default value**: `1`
Minimum number of workers to distribute the load across.

Must be filled in to avoid out-of-memory errors and overloading individual workers when the system starts. Recommended value is about 60% of the target number of workers (to survive the loss of a subset of workers, for example, if a data center goes offline). ||
|| `lost_job_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Time after which a `Job` is considered lost if no status update reaches the controller. The same timeout is used to consider a worker lost. ||
|| `faulty_address_window` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Window within which the exponentially decaying counter of connection losses between the controller and a worker is calculated. If this counter exceeds `faulty_address_attempts`, the worker is considered `faulty` and is ignored during load balancing. Solves the problem of workers that constantly lose connection to the controller. Also solves the problem of two workers with different incarnation IDs but the same address (when deployment has two pods that think they share the same FQDN). ||
|| `faulty_address_attempts` | **Type**: `unsigned long`
**Default value**: `5`
See the description of the `faulty_address_window` parameter. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicJobManagerGroupSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicJobManagerSpec.md -->
## NYT::NFlow::TDynamicJobManagerSpec {#NYT_NFlow_TDynamicJobManagerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `balancer_type` | **Type**: [NYT::NFlow::EJobBalancerType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EJobBalancerType)
**Default value**: `cpu_aware`
 ||
|| `use_cpu_aware_balancer` | **Type**: `std::optional<bool>`
Enables experimental CPU-aware balancing. Default balancing can lead to severe CPU resource imbalance among workers. ||
|| `rebalance_delay_after_pipeline_sync` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `rebalance_target_deviation` | **Type**: `double`
**Default value**: `0.1`
Maximum acceptable deviation. ||
|| `rebalance_hot_mode_coeff` | **Type**: `double`
**Default value**: `2.0`
 ||
|| `rebalance_action_min_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `4s`
 ||
|| `rebalance_action_max_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `12s`
 ||
|| `rebalance_sync_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Period of `cpu_aware` balancing. It is not recommended to set a value lower than `15min` because the balancer looks at `10min` metrics. ||
|| `rebalance_count_exceeded_allowed` | **Type**: `double`
**Default value**: `1.2`
 ||
|| `rebalance_even_load_thresholds` | **Type**: `THashMap<`[NYT::NFlow::EBalanceResource](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBalanceResource)`, NYT::TIntrusivePtr<`[NYT::NFlow::TEvenLoadThresholds](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TEvenLoadThresholds)`>>`
**Default value**: `{}`
Per-resource thresholds of the "load is even" gate, for example `{cpu = {spread = 2.0; ratio = 1.5}}`. Only resources with a non-zero weight are consulted. Unset fields fall back to the defaults: a spread of `1.0` core for CPU and `1 GB` for memory, a ratio of `1.2`. ||
|| `rebalance_min_cpu_spread` | **Type**: `std::optional<double>`
Deprecated: the same as `spread` of the `cpu` entry of `rebalance_even_load_thresholds`. A value set explicitly in `rebalance_even_load_thresholds` takes precedence. ||
|| `rebalance_min_cpu_ratio` | **Type**: `std::optional<double>`
Deprecated: the same as `ratio` of the `cpu` entry of `rebalance_even_load_thresholds`. A value set explicitly in `rebalance_even_load_thresholds` takes precedence. ||
|| `balance_weights` | **Type**: `THashMap<`[NYT::NFlow::EBalanceResource](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBalanceResource)`, double>`
**Default value**: `{'cpu': 1.0, 'memory': 0.0}`
Relative importance of the resources for `cpu_aware` balancing, for example `{cpu = 80; memory = 20}`. The given keys are merged into the default `{cpu = 1; memory = 0}`; the weights are normalized, so only the proportions matter. A resource with a zero weight does not take part in balancing, so by default only CPU is balanced. The `rebalance_target_deviation` threshold applies to the normalized weighted sum: adding a second resource proportionally shrinks the contribution of the first one. ||
|| `balancer_metrics_source` | **Type**: [NYT::NFlow::EBalancerMetricsSource](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EBalancerMetricsSource)
**Default value**: `job`
Where the `cpu_aware` balancer takes a partition's CPU usage from. `partition`: the 10-minute rate of the running job, and until it exists the partition's persisted history (measured by the previous job, survives moves and restarts); 30-second and immediate rates are never used. `job`: the previous behaviour, only the running job's metrics with a fallback to the 30-second and immediate rates. Off by default while the change is rolled out pipeline by pipeline; temporary switch. ||
|| `balance_warmup_protection` | **Type**: `bool`
**Default value**: `false`
Never move a running job whose metrics are not mature yet: the 10-minute rate exists and one more 10-minute window has passed since it appeared. Such a job is still paying for its previous move and its weight is unknown. The protection applies to every balancing resource: a memory-only configuration waits for the CPU rate to mature as well. A worker over the count limit whose kick candidate is immature is skipped for the round. Jobs younger than two minutes stay movable: they have invested nothing yet, and on a pipeline restart the workers do not register all at once. Partitions without a job are placed as usual. Off by default while the change is rolled out pipeline by pipeline; temporary switch. ||
|| `balance_warmup_idle_worker_share` | **Type**: `double`
**Default value**: `0.2`
Share of the group's workers without a job of the group at which warm-up protection is lifted: filling idle workers matters more than the metrics of the jobs that would move, e.g. when workers register minutes apart after a pipeline restart. Temporary switch for rollback. ||
|| `worker_coef_mode` | **Type**: [NYT::NFlow::EWorkerCoefMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EWorkerCoefMode)
**Default value**: `legacy`
How the `cpu_aware` balancer estimates the relative speed of workers. `probing`: from partitions that moved between workers, comparing CPU per message before and after the move; observations per worker pair accumulate in `balancer_state` and are solved together; without moves all coefficients are 1. `legacy`: the previous estimate from the current usage of each worker's partitions against the computation averages. Off by default while the change is rolled out pipeline by pipeline; temporary switch. ||
|| `worker_coef_half_life` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
Half-life of an accumulated worker-pair observation: when a new observation merges in, the old one loses weight in proportion to the time passed. Without new observations the estimate does not change. ||
|| `worker_coef_retention` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `7d`
How long the observations of a worker absent from the group are kept; a worker returning earlier gets its coefficient back. ||
|| `worker_coef_prior_weight` | **Type**: `double`
**Default value**: `0.05`
Weight of the prior "the worker's coefficient is 1" in observation weight units (a move of one partition weighs `1 / N`, `N` being the number of partitions on the receiving worker). Pins the group's mean coefficient to 1 and damps single observations. ||
|| `worker_coef_max_ratio` | **Type**: `double`
**Default value**: `4.0`
Safety limit: worker coefficients are clamped to `[1 / max_ratio, max_ratio]`. ||
|| `disable_even_load_gate` | **Type**: `std::optional<bool>`
 ||
|| `async_balancing` | **Type**: `bool`
**Default value**: `true`
 ||
|| `graceful_move` | **Type**: `bool`
**Default value**: `true`
 ||
|| `zero_queue_latency` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `planning_horizon` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
 ||
|| `preloading_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30m`
How long the `resource_queue` balancer keeps a model preload that is still loading, counted from the request. Until then the preload is not released and the worker counts as a worker of the computations that need the model; after it the usual rules apply. ||
|| `minimum_worker_count` | **Type**: `unsigned long`
**Default value**: `1`
Minimum number of workers to distribute the load across.

Must be filled in to avoid out-of-memory errors and overloading individual workers when the system starts. Recommended value is about 60% of the target number of workers (to survive the loss of a subset of workers, for example, if a data center goes offline). ||
|| `lost_job_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Time after which a `Job` is considered lost if no status update reaches the controller. The same timeout is used to consider a worker lost. ||
|| `faulty_address_window` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Window within which the exponentially decaying counter of connection losses between the controller and a worker is calculated. If this counter exceeds `faulty_address_attempts`, the worker is considered `faulty` and is ignored during load balancing. Solves the problem of workers that constantly lose connection to the controller. Also solves the problem of two workers with different incarnation IDs but the same address (when deployment has two pods that think they share the same FQDN). ||
|| `faulty_address_attempts` | **Type**: `unsigned long`
**Default value**: `5`
See the description of the `faulty_address_window` parameter. ||
|| `worker_group_override` | **Type**: `THashMap<NYT::TStrongTypedef<std::string, NYT::NFlow::TWorkerGroupIdTag, NYT::TStrongTypedefOptions{true}>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicJobManagerGroupSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicJobManagerGroupSpec)`>>`
**Default value**: `{}`
 ||
|| `partition_history_limit` | **Type**: `long`
**Default value**: `4096`
Most partition histories the balancer keeps across job restarts, see `balancer_metrics_source`. The histories live in one persisted document with a size limit, so when the limit is reached the lightest history gives way to a heavier one and lighter ones are not saved. A pipeline stop saves no histories at all. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicJobManagerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicJobTrackerSpec.md -->
## NYT::NFlow::TDynamicJobTrackerSpec {#NYT_NFlow_TDynamicJobTrackerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `job_control_threads` | **Type**: `int`
**Default value**: `3`
Number of control threads.

In most cases, the default value is sufficient. ||
|| `job_threads` | **Type**: `std::optional<int>`
Number of threads for performing jobs.

If not specified, the pool size is calculated automatically based on the node's CPU limit.
If the node limit cannot be calculated, 30 threads are created. ||
|| `buffer_state_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicBufferStateManagerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicBufferStateManagerSpec)`>`
**Default value**: `{}`
Configuration of the buffer management module for incoming and outgoing messages. ||
|| `load_throughput_throttler` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TLoadThroughputThrottlerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TLoadThroughputThrottlerSpec)`>`
**Default value**: `{'limit': 134217728.0}`
 ||
|| `state_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicStateCacheSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicStateCacheSpec)`>`
**Default value**: `{}`
 ||
|| `mark_performance_metrics_steady_after_first_iteration` | **Type**: `bool`
**Default value**: `false`
Report the job's rate counters (CPU, input messages, memory) as steady only once its first iteration with input has completed, so that the balancer reads windowed metrics such as `cpu_usage_10m` after the job's initialization (state download, index build) has decayed out of them; the counters themselves are never reset. A job that has received no input for a minute is reported as steady as well, so an idle job reports its near-zero rates instead of staying unmeasured. Off by default while the change is rolled out pipeline by pipeline; temporary switch. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicJobTrackerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicKeyVisitorStreamSpec.md -->
## NYT::NFlow::TDynamicKeyVisitorStreamSpec {#NYT_NFlow_TDynamicKeyVisitorStreamSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
 ||
|| `buffer_row_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `5K`
 ||
|| `max_scan_rows_per_iteration` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10K`
 ||
|| `background_fill_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `500ms`
 ||
|| `catchup_lag_threshold` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `catchup_speedup_multiplier` | **Type**: `double`
**Default value**: `1.2`
 ||
|| `finite` | **Type**: `bool`
**Default value**: `true`
Whether the visitor is finite: with `%true` it finishes once the streams it follows complete (see `upstream_streams` in the static spec), with `%false` it never finishes. ||
|| `full_final_pass` | **Type**: `bool`
**Default value**: `true`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicKeyVisitorStreamSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicMessageDistributorSpec.md -->
## NYT::NFlow::TDynamicMessageDistributorSpec {#NYT_NFlow_TDynamicMessageDistributorSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `send_queue_max_rows_per_batch` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10K`
 ||
|| `send_queue_max_bytes_per_batch` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10Mi`
 ||
|| `send_queue_batch_duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
 ||
|| `push_messages_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
 ||
|| `compression_codec` | **Type**: [NYT::NCompression::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCompression_ECodec)
**Default value**: `lz4`
 ||
|| `thread_count` | **Type**: `int`
**Default value**: `4`
 ||
|| `hung_task_threshold` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|#


{% cut "**Additional parameters**" %}


#|
|| `max_processed_batch_size` | **Type**: `long`
**Default value**: `500000`
Maximum number of completed messages that a worker reports in a single `PushMessages` response. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicMessageDistributorSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicOutputStoreSpec.md -->
## NYT::NFlow::TDynamicOutputStoreSpec {#NYT_NFlow_TDynamicOutputStoreSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `table_request` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicTableRequestSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicTableRequestSpec)`>`
**Default value**: `{}`
 ||
|| `compression_codec` | **Type**: [NYT::NCompression::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCompression_ECodec)
**Default value**: `zstd_6`
 ||
|| `max_chunk_message_count` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `1Ki`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicOutputStoreSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicPartitionTracerSpec.md -->
## NYT::NFlow::TDynamicPartitionTracerSpec {#NYT_NFlow_TDynamicPartitionTracerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `epochs_in_trace_context` | **Type**: `int`
**Default value**: `3`
 ||
|| `trace_probability` | **Type**: `double`
**Default value**: `0.0`
 ||
|| `trace_probability_partition_override` | **Type**: `THashMap<NYT::TStrongTypedef<NYT::TGuid, NYT::NFlow::TPartitionIdTag, NYT::TStrongTypedefOptions{true}>, double>`
**Default value**: `{}`
 ||
|| `wall_time_half_decay_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicPartitionTracerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicPipelineSpec.md -->
## NYT::NFlow::TDynamicPipelineSpec {#NYT_NFlow_TDynamicPipelineSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `target_state` | **Type**: [NYT::NFlow::EPipelineState](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EPipelineState)
**Default value**: `unknown`
Target state of the system. Use the `start-pipeline`, `stop-pipeline`, and `pause-pipeline` commands to change it. ||
|| `computations` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicComputationSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicComputationSpec)`>>`
**Default value**: `{}`
Named list of all pipeline nodes. ||
|| `resources` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TResourceIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicResourceSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicResourceSpec)`>>`
**Default value**: `{}`
 ||
|| `throttlers` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TThrottlerIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicThrottlerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicThrottlerSpec)`>>`
**Default value**: `{}`
A set of named distributed throttlers common to all `Computation` pipeline nodes. Keys are throttler IDs and must match `[0-9A-Za-z_-]+`. For more information, see [Distributed Throttler](https://ytsaurus.tech/docs/en/flow/concepts/distributed_throttler.md). ||
|| `job_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicJobManagerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicJobManagerSpec)`>`
**Default value**: `{}`
`JobManager` settings. ||
|| `message_distributor` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicMessageDistributorSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicMessageDistributorSpec)`>`
**Default value**: `{}`
`MessageDistributor` settings. ||
|| `job_tracker` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicJobTrackerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicJobTrackerSpec)`>`
**Default value**: `{}`
`JobTracker` settings. ||
|| `controller_connector` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicControllerConnectorSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicControllerConnectorSpec)`>`
**Default value**: `{}`
`ControllerConnector` settings. ||
|| `singletons` | **Type**: `NYT::TIntrusivePtr<`[NYT::TSingletonsDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_TSingletonsDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `enable_mermaid_graph_describe` | **Type**: `bool`
**Default value**: `false`
 ||
|| `flow_view_cache_codec` | **Type**: [NYT::NCompression::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCompression_ECodec)
**Default value**: `zstd_2`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicPipelineSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicResourceSpec.md -->
## NYT::NFlow::TDynamicResourceSpec {#NYT_NFlow_TDynamicResourceSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Dynamic parameters of the user resource class. ||
|| `file_providers` | **Type**: `THashMap<NYT::TStrongTypedef<std::string, NYT::NFlow::TFileProviderIdTag, NYT::TStrongTypedefOptions{true}>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicFileProviderSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicFileProviderSpec)`>>`
**Default value**: `{}`
Dynamic parameters of the resource's named file providers. Changing the parameters immediately schedules discovery of the corresponding provider. ||
|| `file_provider_discover_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
Discovery period for all named file providers of the resource. ||
|| `file_provider_update_retry_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Retry period after a file snapshot fails to download, initialize, or validate. ||
|| `file_snapshot_min_creation_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Minimum period between new complete file snapshots. More frequent provider updates are accumulated until the next snapshot is allowed. ||
|| `file_snapshot_catalog_max_entries` | **Type**: `long`
**Default value**: `1024`
Maximum number of file snapshots retained in controller state. The current Active and Preparing snapshots are never evicted. ||
|| `file_snapshot_rollout_warning_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15m`
Time after publishing an Active file snapshot before an incomplete worker rollout is reported in the resource status. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicResourceSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicRetryableRequestSpec.md -->
## NYT::NFlow::TDynamicRetryableRequestSpec {#NYT_NFlow_TDynamicRetryableRequestSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `min_inner_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `backoff` | **Type**: `NYT::TExponentialBackoffOptions`
**Default value**:

```yson
{
    "backoff_jitter" = 0.1;
    "backoff_multiplier" = 2.;
    "invocation_count" = 30;
    "max_backoff" = 60000;
    "min_backoff" = 1000;
}
```
 ||
|| `lease_check_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicRetryableRequestSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicSimpleExternalStateJoinerSpec.md -->
## NYT::NFlow::TDynamicSimpleExternalStateJoinerSpec {#NYT_NFlow_TDynamicSimpleExternalStateJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/computation/simple_external_state_manager.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/computation/simple_external_state_manager.h)

#|
|| **Parameter** | **Description** ||
|| `cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicExpiringJobNamedStateCacheSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicExpiringJobNamedStateCacheSpec)`>`
**Default value**: `{}`
TTL cache settings for loaded states. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicSimpleExternalStateJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicSimpleExternalStateManagerSpec.md -->
## NYT::NFlow::TDynamicSimpleExternalStateManagerSpec {#NYT_NFlow_TDynamicSimpleExternalStateManagerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/computation/simple_external_state_manager.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/computation/simple_external_state_manager.h)

**This structure has no main parameters.**
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicSimpleExternalStateManagerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicSinkSpec.md -->
## NYT::NFlow::TDynamicSinkSpec {#NYT_NFlow_TDynamicSinkSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Arbitrary dynamic parameters of the corresponding `Sink` class. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicSinkSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicSourceSpec.md -->
## NYT::NFlow::TDynamicSourceSpec {#NYT_NFlow_TDynamicSourceSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Arbitrary dynamic parameters of the corresponding `Source` class. ||
|| `draining` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicSourceSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicStateCacheSpec.md -->
## NYT::NFlow::TDynamicStateCacheSpec {#NYT_NFlow_TDynamicStateCacheSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `compressed_cache_weight` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `1Gi`
Limit for `compressed`. ||
|| `uncompressed_cache_weight` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `100Mi`
Limit for `uncompressed`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicStateCacheSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicStateFormatSpec.md -->
## NYT::NFlow::TDynamicStateFormatSpec {#NYT_NFlow_TDynamicStateFormatSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `compression` | **Type**: [NYT::NCompression::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCompression_ECodec)
 ||
|| `patch_compression` | **Type**: [NYT::NCompression::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCompression_ECodec)
 ||
|| `delta` | **Type**: [NYT::NFlow::NDeltaCodecs::ECodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NDeltaCodecs_ECodec)
 ||
|| `compress` | **Type**: `bool`
**Default value**: `false`
 ||
|| `recode_probability` | **Type**: `double`
**Default value**: `0.1`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicStateFormatSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicStateJoinerSpec.md -->
## NYT::NFlow::TDynamicStateJoinerSpec {#NYT_NFlow_TDynamicStateJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicExpiringJobNamedStateCacheSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicExpiringJobNamedStateCacheSpec)`>`
**Default value**: `{}`
TTL cache settings for loaded states. Disabled by default (`ttl = 0`). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicStateJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicStateManagerSpec.md -->
## NYT::NFlow::TDynamicStateManagerSpec {#NYT_NFlow_TDynamicStateManagerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `format` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicStateFormatSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicStateFormatSpec)`>`
**Default value**: `{}`
 ||
|| `table_request` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicTableRequestSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicTableRequestSpec)`>`
**Default value**: `{}`
 ||
|| `format_overrides` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicStateFormatSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicStateFormatSpec)`>>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicStateManagerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicStaticTableKeyVisitorJoinerSpec.md -->
## NYT::NFlow::TDynamicStaticTableKeyVisitorJoinerSpec {#NYT_NFlow_TDynamicStaticTableKeyVisitorJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/computation/static_table_key_visitor_joiner.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/computation/static_table_key_visitor_joiner.h)

#|
|| **Parameter** | **Description** ||
|| `read_attempts` | **Type**: `int`
**Default value**: `3`
Budget of attempts for a single source read. A read that exhausts the budget is considered unsuccessful and is handled according to `unavailable_source_policy`. ||
|| `unavailable_source_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
How long an unsuccessful read marks the source as unavailable.
While the marker is active, there are no accesses to the source: each read immediately resolves according to `unavailable_source_policy`.
The first read after the window expires retries the source. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicStaticTableKeyVisitorJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicTableRequestSpec.md -->
## NYT::NFlow::TDynamicTableRequestSpec {#NYT_NFlow_TDynamicTableRequestSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `select_min_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10`
 ||
|| `select_limit_multiplier` | **Type**: `long`
**Default value**: `5`
 ||
|| `select_max_limit` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10K`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicTableRequestSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicThrottlerClassSpec.md -->
## NYT::NFlow::TDynamicThrottlerClassSpec {#NYT_NFlow_TDynamicThrottlerClassSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

Configuration of one distributed-throttler quota class.

#|
|| **Parameter** | **Description** ||
|| `weight` | **Type**: `double`
**Default value**: `1.0`
Positive finite weight defining the class's long-run share among active classes. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicThrottlerClassSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicThrottlerSpec.md -->
## NYT::NFlow::TDynamicThrottlerSpec {#NYT_NFlow_TDynamicThrottlerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

Configuration of a named distributed throttler.

#|
|| **Parameter** | **Description** ||
|| `limit` | **Type**: `std::optional<double>`
Average quota issuance rate in units per second. `none` means `unlimited`. ||
|| `period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Averaging period for the average rate in the [token bucket](https://en.wikipedia.org/wiki/Token_bucket) algorithm: over `period`, the bucket is replenished to the volume of `limit * period` units. The same volume is the maximum possible burst. ||
|| `request_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
Target interval between client requests to the controller (the prefetch size adjusts to this interval). ||
|| `retrying_channel` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TRetryingChannelConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TRetryingChannelConfig)`>`
**Default value**:

```yson
{
    "enable_exponential_retry_backoffs" = %true;
    "retry_attempts" = 100;
    "retry_timeout" = 600000;
}
```
Retry parameters for requests to the throttler service. The defaults are designed to survive a controller leader change even if it takes a long time. ||
|| `rpc_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
Timeout for a single `RequestQuota` request. ||
|| `classes` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TQuotaClassIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicThrottlerClassSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicThrottlerClassSpec)`>>`
**Default value**: `{}`
Named weighted quota classes. Keys must match `[0-9A-Za-z_-]+`. Backlogged classes share bandwidth in proportion to their weights and idle shares are redistributed. ||
|| `max_grant_amount` | **Type**: `std::optional<long>`
Maximum server scheduling chunk in absolute quota units. It bounds the delay before active classes are reconsidered. If unset, a single request is granted whole, so it holds the token bucket for its entire prefetch window and delays every other class by that long. ||
|| `use_class_weights_as_limit` | **Type**: `bool`
**Default value**: `false`
Reads the class weights as absolute rates: the issuance rate becomes the sum of the declared class weights, so a backlogged class is served at its weight in units per second. Requires at least one class and is mutually exclusive with `limit`. The reserved `default` class is not part of the sum. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicThrottlerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicTimerStoreSpec.md -->
## NYT::NFlow::TDynamicTimerStoreSpec {#NYT_NFlow_TDynamicTimerStoreSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `table_request` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicTableRequestSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicTableRequestSpec)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicTimerStoreSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TSwiftMapCompanionComputation.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NCompanion::TSwiftMapCompanionComputation&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TSwiftMapCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `std::optional<int>`
 ||
|| `min_partition_count` | **Type**: `std::optional<int>`
 ||
|| `max_partition_count` | **Type**: `std::optional<int>`
 ||
|| `sink_channel_multiplier` | **Type**: `std::optional<int>`
 ||
|| `desired_average_partition_cpu_load` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_memory_used` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_messages_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_timer_count` | **Type**: `std::optional<double>`
 ||
|| `allowed_partition_count_deviation` | **Type**: `std::optional<double>`
 ||
|| `partition_count_double_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `partition_count_half_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `weight_multiplier` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `interrupting_weight_multiplier` | **Type**: `double`
**Default value**: `0.1`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TSwiftMapCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TSwiftOrderedSourceCompanionComputation.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NCompanion::TSwiftOrderedSourceCompanionComputation&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TSwiftOrderedSourceCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `std::optional<int>`
 ||
|| `min_partition_count` | **Type**: `std::optional<int>`
 ||
|| `max_partition_count` | **Type**: `std::optional<int>`
 ||
|| `sink_channel_multiplier` | **Type**: `std::optional<int>`
 ||
|| `desired_average_partition_cpu_load` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_memory_used` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_messages_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_timer_count` | **Type**: `std::optional<double>`
 ||
|| `allowed_partition_count_deviation` | **Type**: `std::optional<double>`
 ||
|| `partition_count_double_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `partition_count_half_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `weight_multiplier` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `interrupting_weight_multiplier` | **Type**: `double`
**Default value**: `0.1`
 ||
|| `max_read_window` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TSwiftOrderedSourceCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TTransformCompanionComputation.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NCompanion::TTransformCompanionComputation&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TTransformCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `std::optional<int>`
 ||
|| `min_partition_count` | **Type**: `std::optional<int>`
 ||
|| `max_partition_count` | **Type**: `std::optional<int>`
 ||
|| `sink_channel_multiplier` | **Type**: `std::optional<int>`
 ||
|| `desired_average_partition_cpu_load` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_memory_used` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_messages_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_timer_count` | **Type**: `std::optional<double>`
 ||
|| `allowed_partition_count_deviation` | **Type**: `std::optional<double>`
 ||
|| `partition_count_double_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `partition_count_half_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `weight_multiplier` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `interrupting_weight_multiplier` | **Type**: `double`
**Default value**: `0.1`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TTransformCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TTransformOrderedSourceCompanionComputation.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NCompanion::TTransformOrderedSourceCompanionComputation&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TTransformOrderedSourceCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `std::optional<int>`
 ||
|| `min_partition_count` | **Type**: `std::optional<int>`
 ||
|| `max_partition_count` | **Type**: `std::optional<int>`
 ||
|| `sink_channel_multiplier` | **Type**: `std::optional<int>`
 ||
|| `desired_average_partition_cpu_load` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_memory_used` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_messages_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_timer_count` | **Type**: `std::optional<double>`
 ||
|| `allowed_partition_count_deviation` | **Type**: `std::optional<double>`
 ||
|| `partition_count_double_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `partition_count_half_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `weight_multiplier` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `interrupting_weight_multiplier` | **Type**: `double`
**Default value**: `0.1`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NCompanion_TTransformOrderedSourceCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NSortedDynamicTable_TAsyncSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NSortedDynamicTable::TAsyncSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NSortedDynamicTable_TAsyncSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `max_rows_per_batch` | **Type**: `long`
**Default value**: `1000`
Maximum number of Flow messages in a batch: the batching sink flushes the accumulated batch when it reaches this threshold. The valid range is 1 through 2000. ||
|| `max_bytes_per_batch` | **Type**: `long`
**Default value**: `5242880`
Maximum total size of Flow messages in a batch: the batching sink flushes the accumulated batch when it reaches this threshold. The valid range is 1 byte through 10 MiB. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `backoff_duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
Initial retry delay before jitter. Retry delays use exponential backoff with jitter; the delay before jitter is capped at one minute (or at this value when it is greater). The sink keeps retrying until the write succeeds or the job is cancelled, and reports the latest error in its status. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NSortedDynamicTable_TAsyncSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NSortedDynamicTable_TSyncSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NSortedDynamicTable::TSyncSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NSortedDynamicTable_TSyncSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

**This structure has no main parameters.**
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NSortedDynamicTable_TSyncSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnector_TArrivalOrderTableSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NStaticTableConnector::TArrivalOrderTableSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnector_TArrivalOrderTableSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `max_row_count` | **Type**: `long`
**Default value**: `10000`
Maximum number of messages in a table. Reaching the limit advances the sink to the next grid step, including future steps. ||
|| `max_data_weight` | **Type**: `long`
**Default value**: `1073741824`
Maximum total message weight in a table. Reaching the limit advances the sink to the next grid step. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `transaction_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Timeout of the master transaction that atomically creates a table and advances delivery progress. ||
|| `retry_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Delay between transaction retries. Retries continue until success or job cancellation. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnector_TArrivalOrderTableSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnector_TSource.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NStaticTableConnector::TSource&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnector_TSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_table_process_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1h`
The time to read one input table. The main parameter for controlling read speed. ||
|| `max_rows_per_second` | **Type**: `double`
**Default value**: `1000000000000.0`
 ||
|| `max_bytes_per_second` | **Type**: `double`
**Default value**: `1000000000000.0`
 ||
|| `max_event_timestamp` | **Type**: `std::optional<unsigned long>`
 ||
|| `restart_instant` | **Type**: `TInstant`
**Default value**: `1970-01-01T00:00:00.000000Z`
Set this parameter to the current time in ISO 8601 to forget the current progress and start reading static tables from scratch. You can safely decrease the parameter value without triggering an additional read restart. A restart happens only if the current restart_instant is greater than the last restart_instant that the source saved internally. This parameter does not correlate with static table timestamps and does not filter them for the read restart. ||
|| `allow_v1_migration` | **Type**: `bool`
**Default value**: `true`
Controls departure from V1-compatible ordering. The default is `true`. A V1-shaped checkpoint is detected as `V1`, and a source with this flag enabled advances it one way through `V1` &rarr; `Draining` &rarr; `V2`, or directly to `V2` when no V1 table is in progress. Set the flag to `false` to postpone the initial cutover. Persisted `Draining` and `V2` are authoritative and are never downgraded by changing this flag to `false`. ||
|#


{% cut "**Additional parameters**" %}

These parameters are for fine tuning. It is not recommended to change them without a deep understanding of the system.

#|
|| `unavailable_threshold` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
How long the source must be continuously unavailable for the partition to count as stably unavailable. Only time during which the job was running and seeing the failure counts: a gap between restarts is not charged, and any successful answer from the source resets the total. ||
|| `min_event_timestamp` | **Type**: `std::optional<unsigned long>`
Tables whose EventTimestamp is less than MinEventTimestamp are not processed. ||
|| `max_partition_count` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10K`
Not recommended to change. An upper limit on the number of concurrently active partitions. ||
|| `throttler_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Not recommended to change. Adjusts the window in which the read speed from a partition is controlled. ||
|| `desired_partition_process_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
Not recommended to change. Controls how large partitions the controller will create. ||
|| `desired_partition_rows_per_second` | **Type**: `double`
**Default value**: `1000.0`
Not recommended to change. Controls how large partitions the controller will create. ||
|| `desired_partition_bytes_per_second` | **Type**: `double`
**Default value**: `1000000.0`
Not recommended to change. Controls how large partitions the controller will create. ||
|| `read_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Not recommended to change. Recreates the table reader if it returns an empty response within the period. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnector_TSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnectorV2_TSource.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::NStaticTableConnectorV2::TSource&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnectorV2_TSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_table_process_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1h`
The time to read one input table. The main parameter for controlling read speed. ||
|| `max_rows_per_second` | **Type**: `double`
**Default value**: `1000000000000.0`
 ||
|| `max_bytes_per_second` | **Type**: `double`
**Default value**: `1000000000000.0`
 ||
|| `max_event_timestamp` | **Type**: `std::optional<unsigned long>`
 ||
|| `restart_instant` | **Type**: `TInstant`
**Default value**: `1970-01-01T00:00:00.000000Z`
Set this parameter to the current time in ISO 8601 to forget the current progress and start reading static tables from scratch. You can safely decrease the parameter value without triggering an additional read restart. A restart happens only if the current restart_instant is greater than the last restart_instant that the source saved internally. This parameter does not correlate with static table timestamps and does not filter them for the read restart. ||
|| `allow_v1_migration` | **Type**: `bool`
**Default value**: `true`
Controls departure from V1-compatible ordering. The default is `true`. A V1-shaped checkpoint is detected as `V1`, and a source with this flag enabled advances it one way through `V1` &rarr; `Draining` &rarr; `V2`, or directly to `V2` when no V1 table is in progress. Set the flag to `false` to postpone the initial cutover. Persisted `Draining` and `V2` are authoritative and are never downgraded by changing this flag to `false`. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `unavailable_threshold` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
How long the source must be continuously unavailable for the partition to count as stably unavailable. Only time during which the job was running and seeing the failure counts: a gap between restarts is not charged, and any successful answer from the source resets the total. ||
|| `min_event_timestamp` | **Type**: `std::optional<unsigned long>`
Tables whose EventTimestamp is less than MinEventTimestamp are not processed. ||
|| `max_partition_count` | **Type**: [NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)
**Default value**: `10K`
Not recommended to change. An upper limit on the number of concurrently active partitions. ||
|| `throttler_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Not recommended to change. Adjusts the window in which the read speed from a partition is controlled. ||
|| `desired_partition_process_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
Not recommended to change. Controls how large partitions the controller will create. ||
|| `desired_partition_rows_per_second` | **Type**: `double`
**Default value**: `1000.0`
Not recommended to change. Controls how large partitions the controller will create. ||
|| `desired_partition_bytes_per_second` | **Type**: `double`
**Default value**: `1000000.0`
Not recommended to change. Controls how large partitions the controller will create. ||
|| `read_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Not recommended to change. Recreates the table reader if it returns an empty response within the period. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_NStaticTableConnectorV2_TSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncHttpSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TAsyncHttpSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncHttpSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyDynamicParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyDynamicParameters)`>`
**Default value**: `{}`
Dynamic parameters for `at_most_once_strategy`. Connector support varies; check the connector documentation before configuring them. ||
|| `request_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Total deadline for one message, including all HTTP attempts and retry delays. Exhausting it terminally stops the sink for the current job. ||
|| `attempt_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Maximum duration of one HTTP attempt. Each attempt is additionally limited by the time remaining before `request_timeout`; this value must not exceed `request_timeout`. ||
|| `retry_initial_delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Delay before the first retry. It must be between `retry_minimum_delay` and `retry_maximum_delay`. ||
|| `retry_minimum_delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
Lower bound for a retry delay after jitter is applied. It must not exceed `retry_initial_delay`. ||
|| `retry_multiplier` | **Type**: `double`
**Default value**: `2.0`
Multiplier for exponential retry delay growth. Allowed values range from `1.01` through `100.0`. ||
|| `retry_maximum_delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
Upper bound for retry delays. It must not be less than `retry_initial_delay`. ||
|| `retry_jitter_ratio` | **Type**: `double`
**Default value**: `0.2`
Random relative deviation applied to a retry delay. Allowed values range from `0.0` through `1.0`. ||
|| `max_attempt_count` | **Type**: `int`
**Default value**: `5`
Maximum number of HTTP attempts, including the initial attempt. Exhausting it terminally stops the sink for the current job. Allowed values range from 1 through 100. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncHttpSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncMultiClusterQueueSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TAsyncMultiClusterQueueSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncMultiClusterQueueSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyDynamicParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyDynamicParameters)`>`
**Default value**: `{}`
Dynamic parameters for `at_most_once_strategy`. Connector support varies; check the connector documentation before configuring them. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `flow_queue_meta_heartbeat_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
How often the controller will write heartbeats with meta containing watermarks to all queue partitions. ||
|| `write_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
 ||
|| `max_rows_per_write` | **Type**: `long`
**Default value**: `1000`
 ||
|| `max_bytes_per_write` | **Type**: `long`
**Default value**: `1048576`
 ||
|| `backoff_duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncMultiClusterQueueSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncQueueSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TAsyncQueueSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncQueueSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyDynamicParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyDynamicParameters)`>`
**Default value**: `{}`
Dynamic parameters for `at_most_once_strategy`. Connector support varies; check the connector documentation before configuring them. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `flow_queue_meta_heartbeat_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
How often the controller will write heartbeats with meta containing watermarks to all queue partitions. ||
|| `write_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
 ||
|| `max_rows_per_write` | **Type**: `long`
**Default value**: `1000`
 ||
|| `max_bytes_per_write` | **Type**: `long`
**Default value**: `1048576`
 ||
|| `backoff_duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAsyncQueueSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAtLeastOnceClickHouseSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TAtLeastOnceClickHouseSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAtLeastOnceClickHouseSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `write_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Timeout of a single network operation (send/recv). ||
|| `retry_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Pause between insert retries. ||
|| `max_insert_attempts` | **Type**: `long`
**Default value**: `10`
Maximum number of insert attempts for errors that cannot be reliably classified as transient (server errors, for example); once exhausted, the write fails. Known transient errors (network, protocol) are retried without a limit, and unrecoverable ones (validation) are not retried. ||
|| `async_insert` | **Type**: `bool`
**Default value**: `false`
Enables server-side asynchronous inserts. All sink classes emit `async_insert=1` and `wait_for_async_insert=1`. The batching exactly-once sinks additionally provide their deduplication token and emit `async_insert_deduplicate=1`; the at-least-once and at-most-once sinks intentionally omit the deduplication token and the `async_insert_deduplicate` setting. ||
|| `replay_horizon` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
Upper bound on replay lag, used to check the deduplication window. When the writer session starts before the first insert, it is compared with the server-side `replicated_deduplication_window_seconds`, or `replicated_deduplication_window_seconds_for_async_inserts` when `async_insert` is enabled. If the selected window is shorter, a warning is written to the worker log. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAtLeastOnceClickHouseSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAtMostOnceClickHouseSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TAtMostOnceClickHouseSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAtMostOnceClickHouseSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `write_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Timeout of a single network operation (send/recv). ||
|| `retry_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Pause between insert retries. ||
|| `max_insert_attempts` | **Type**: `long`
**Default value**: `10`
Maximum number of insert attempts for errors that cannot be reliably classified as transient (server errors, for example); once exhausted, the write fails. Known transient errors (network, protocol) are retried without a limit, and unrecoverable ones (validation) are not retried. ||
|| `async_insert` | **Type**: `bool`
**Default value**: `false`
Enables server-side asynchronous inserts. All sink classes emit `async_insert=1` and `wait_for_async_insert=1`. The batching exactly-once sinks additionally provide their deduplication token and emit `async_insert_deduplicate=1`; the at-least-once and at-most-once sinks intentionally omit the deduplication token and the `async_insert_deduplicate` setting. ||
|| `replay_horizon` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
Upper bound on replay lag, used to check the deduplication window. When the writer session starts before the first insert, it is compared with the server-side `replicated_deduplication_window_seconds`, or `replicated_deduplication_window_seconds_for_async_inserts` when `async_insert` is enabled. If the selected window is shorter, a warning is written to the worker log. ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyDynamicParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyDynamicParameters)`>`
**Default value**: `{}`
Dynamic parameters for `at_most_once_strategy`. Connector support varies; check the connector documentation before configuring them. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TAtMostOnceClickHouseSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TClickHouseBatchingSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TClickHouseBatchingSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TClickHouseBatchingSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `write_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Timeout of a single network operation (send/recv). ||
|| `retry_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Pause between insert retries. ||
|| `max_insert_attempts` | **Type**: `long`
**Default value**: `10`
Maximum number of insert attempts for errors that cannot be reliably classified as transient (server errors, for example); once exhausted, the write fails. Known transient errors (network, protocol) are retried without a limit, and unrecoverable ones (validation) are not retried. ||
|| `async_insert` | **Type**: `bool`
**Default value**: `false`
Enables server-side asynchronous inserts. All sink classes emit `async_insert=1` and `wait_for_async_insert=1`. The batching exactly-once sinks additionally provide their deduplication token and emit `async_insert_deduplicate=1`; the at-least-once and at-most-once sinks intentionally omit the deduplication token and the `async_insert_deduplicate` setting. ||
|| `replay_horizon` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
Upper bound on replay lag, used to check the deduplication window. When the writer session starts before the first insert, it is compared with the server-side `replicated_deduplication_window_seconds`, or `replicated_deduplication_window_seconds_for_async_inserts` when `async_insert` is enabled. If the selected window is shorter, a warning is written to the worker log. ||
|| `max_rows_per_batch` | **Type**: `long`
**Default value**: `1000`
Maximum number of Flow messages in a batch: the batching sink flushes the accumulated batch when it reaches this threshold. The valid range is 1 through 2000. ||
|| `max_bytes_per_batch` | **Type**: `long`
**Default value**: `5242880`
Maximum total size of Flow messages in a batch: the batching sink flushes the accumulated batch when it reaches this threshold. The valid range is 1 byte through 10 MiB. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TClickHouseBatchingSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TPassthroughComputation.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TPassthroughComputation&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TPassthroughComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `std::optional<int>`
 ||
|| `min_partition_count` | **Type**: `std::optional<int>`
 ||
|| `max_partition_count` | **Type**: `std::optional<int>`
 ||
|| `sink_channel_multiplier` | **Type**: `std::optional<int>`
 ||
|| `desired_average_partition_cpu_load` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_memory_used` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_messages_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_timer_count` | **Type**: `std::optional<double>`
 ||
|| `allowed_partition_count_deviation` | **Type**: `std::optional<double>`
 ||
|| `partition_count_double_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `partition_count_half_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `weight_multiplier` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `interrupting_weight_multiplier` | **Type**: `double`
**Default value**: `0.1`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TPassthroughComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TQueueSource.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TQueueSource&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TQueueSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `pull_queue_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Timeout for a read request from the queue. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `unavailable_threshold` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
How long the source must be continuously unavailable for the partition to count as stably unavailable. Only time during which the job was running and seeing the failure counts: a gap between restarts is not charged, and any successful answer from the source resets the total. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TQueueSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TRandomSource.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TRandomSource&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TRandomSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `partition_count` | **Type**: `int`
**Default value**: `3`
 ||
|| `partition_message_count` | **Type**: `std::optional<int>`
 ||
|| `message_size_mean` | **Type**: `int`
**Default value**: `1024`
 ||
|| `message_count_mean` | **Type**: `int`
**Default value**: `1000000`
 ||
|| `message_key_range` | **Type**: `int`
**Default value**: `1024`
 ||
|| `reported_backlog_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `reported_backlog_messages_per_second` | **Type**: `std::optional<double>`
 ||
|#


{% cut "**Additional parameters**" %}


#|
|| `unavailable_threshold` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
How long the source must be continuously unavailable for the partition to count as stably unavailable. Only time during which the job was running and seeing the failure counts: a gap between restarts is not charged, and any successful answer from the source resets the total. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TRandomSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TServiceLogSource.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TServiceLogSource&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TServiceLogSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `long`
**Default value**: `5`
Desired number of partitions. Estimate as 1 partition per 1 MB/s of stream. ||
|| `desired_cycle_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `12h`
The source will try to maintain a message generation rate that traverses the entire table once every `desired_cycle_time`. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `unavailable_threshold` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
How long the source must be continuously unavailable for the partition to count as stably unavailable. Only time during which the job was running and seeing the failure counts: a gap between restarts is not charged, and any successful answer from the source resets the total. ||
|| `throttler_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
Throttling period. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TServiceLogSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TShardedClickHouseBatchingSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TShardedClickHouseBatchingSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TShardedClickHouseBatchingSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `write_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Timeout of a single network operation (send/recv). ||
|| `retry_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Pause between insert retries. ||
|| `max_insert_attempts` | **Type**: `long`
**Default value**: `10`
Maximum number of insert attempts for errors that cannot be reliably classified as transient (server errors, for example); once exhausted, the write fails. Known transient errors (network, protocol) are retried without a limit, and unrecoverable ones (validation) are not retried. ||
|| `async_insert` | **Type**: `bool`
**Default value**: `false`
Enables server-side asynchronous inserts. All sink classes emit `async_insert=1` and `wait_for_async_insert=1`. The batching exactly-once sinks additionally provide their deduplication token and emit `async_insert_deduplicate=1`; the at-least-once and at-most-once sinks intentionally omit the deduplication token and the `async_insert_deduplicate` setting. ||
|| `replay_horizon` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
Upper bound on replay lag, used to check the deduplication window. When the writer session starts before the first insert, it is compared with the server-side `replicated_deduplication_window_seconds`, or `replicated_deduplication_window_seconds_for_async_inserts` when `async_insert` is enabled. If the selected window is shorter, a warning is written to the worker log. ||
|| `max_rows_per_batch` | **Type**: `long`
**Default value**: `1000`
Maximum number of Flow messages in a batch: the batching sink flushes the accumulated batch when it reaches this threshold. The valid range is 1 through 2000. ||
|| `max_bytes_per_batch` | **Type**: `long`
**Default value**: `5242880`
Maximum total size of Flow messages in a batch: the batching sink flushes the accumulated batch when it reaches this threshold. The valid range is 1 byte through 10 MiB. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TShardedClickHouseBatchingSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSwiftPassthroughComputation.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TSwiftPassthroughComputation&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSwiftPassthroughComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `std::optional<int>`
 ||
|| `min_partition_count` | **Type**: `std::optional<int>`
 ||
|| `max_partition_count` | **Type**: `std::optional<int>`
 ||
|| `sink_channel_multiplier` | **Type**: `std::optional<int>`
 ||
|| `desired_average_partition_cpu_load` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_memory_used` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_messages_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_timer_count` | **Type**: `std::optional<double>`
 ||
|| `allowed_partition_count_deviation` | **Type**: `std::optional<double>`
 ||
|| `partition_count_double_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `partition_count_half_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `weight_multiplier` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `interrupting_weight_multiplier` | **Type**: `double`
**Default value**: `0.1`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSwiftPassthroughComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSwiftPassthroughOrderedSourceComputation.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TSwiftPassthroughOrderedSourceComputation&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSwiftPassthroughOrderedSourceComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `desired_partition_count` | **Type**: `std::optional<int>`
 ||
|| `min_partition_count` | **Type**: `std::optional<int>`
 ||
|| `max_partition_count` | **Type**: `std::optional<int>`
 ||
|| `sink_channel_multiplier` | **Type**: `std::optional<int>`
 ||
|| `desired_average_partition_cpu_load` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_memory_used` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_messages_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_bytes_per_second` | **Type**: `std::optional<double>`
 ||
|| `desired_average_partition_timer_count` | **Type**: `std::optional<double>`
 ||
|| `allowed_partition_count_deviation` | **Type**: `std::optional<double>`
 ||
|| `partition_count_double_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `partition_count_half_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `weight_multiplier` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `interrupting_weight_multiplier` | **Type**: `double`
**Default value**: `0.1`
 ||
|| `max_read_window` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSwiftPassthroughOrderedSourceComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSyncQueueSink.md -->
## NYT::NFlow::TDynamicUnitedParameters&lt;NYT::NFlow::TSyncQueueSink&gt; {#NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSyncQueueSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

**This structure has no main parameters.**


{% cut "**Additional parameters**" %}


#|
|| `flow_queue_meta_heartbeat_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
How often the controller will write heartbeats with meta containing watermarks to all queue partitions. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TDynamicUnitedParameters_NYT_NFlow_TSyncQueueSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TEvenLoadThresholds.md -->
## NYT::NFlow::TEvenLoadThresholds {#NYT_NFlow_TEvenLoadThresholds}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `spread` | **Type**: `std::optional<double>`
Minimal gap between the maximal and the minimal per-worker usage of the resource (in the resource's own units: cores for CPU, bytes for memory) from which the load counts as uneven. ||
|| `ratio` | **Type**: `std::optional<double>`
Minimal ratio of the maximal per-worker usage to the minimal one from which the load counts as uneven. At least `1`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TEvenLoadThresholds.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TEventTimestampAssignerSpec.md -->
## NYT::NFlow::TEventTimestampAssignerSpec {#NYT_NFlow_TEventTimestampAssignerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `column` | **Type**: `std::optional<std::string>`
The time column. ||
|| `format` | **Type**: [NYT::NFlow::ETimestampFormat](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_ETimestampFormat)
**Default value**: `seconds`
The time format used (`seconds` and `milliseconds`). ||
|| `limit_by_system_timestamp` | **Type**: `bool`
**Default value**: `false`
Limit `EventTimestamp` to the `SystemTimestamp` value to protect against corrupted values from the future. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TEventTimestampAssignerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TExternalStateJoinerSpec.md -->
## NYT::NFlow::TExternalStateJoinerSpec {#NYT_NFlow_TExternalStateJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `external_state_joiner_class_name` | **Type**: `std::string`
**Default value**: `NYT::NFlow::TSimpleExternalStateJoiner`
Full class name of the external state joiner. Must be registered with the `YT_FLOW_DEFINE_EXTERNAL_STATE_JOINER` macro (or be a library implementation such as `NYT::NFlow::TSimpleExternalStateJoiner`). ||
|| `client_provider_resource_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TResourceIdTag>>`
If set, the framework searches for a static resource with this name (must implement `IYTClientProvider`) and uses its `Get()` as the joiner's YT client. In this case, the `cluster` from the table's rich path is ignored. Mutually exclusive with `client_factory_resource_id` (this parameter takes priority). ||
|| `client_factory_resource_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TResourceIdTag>>`
If set, the framework searches for a static resource with this name (must implement `IYTClientProvider`) and uses `GetClient(cluster)` to get a YT client for the cluster from the table's rich path. Mutually exclusive with `client_provider_resource_id`. ||
|| `join_on` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TStateJoinSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TStateJoinSpec)`>`
**Default value**: `{}`
Description of the mapping between the computation input stream keys and the joiner keys (see `TStateJoinSpec`). ||
|| `auto_preload` | **Type**: `bool`
**Default value**: `true`
If `true` (default), the framework automatically calls `PreloadKeyStates` on this joiner before each `DoProcess`, forming keys using `join_on`. If `false`, the computation is responsible for calling `Client.PreloadKeyStates(IInputContextPtr)` or `PreloadKeyStates(THashSet<TKey>)` before `GetState`. ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
Parameters of the specific joiner implementation. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TExternalStateJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TExternalStateManagerSpec.md -->
## NYT::NFlow::TExternalStateManagerSpec {#NYT_NFlow_TExternalStateManagerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `external_state_manager_class_name` | **Type**: `std::string`
**Default value**: `NYT::NFlow::TSimpleExternalStateManager`
Full class name of the external state manager. Must be registered with the `YT_FLOW_DEFINE_EXTERNAL_STATE_MANAGER` macro (or be a library implementation such as `NYT::NFlow::TSimpleExternalStateManager`). ||
|| `auto_preload` | **Type**: `bool`
**Default value**: `true`
If `true` (default), the framework automatically calls `PreloadKeyStates` on this manager before each `DoProcess` with every message, timer and visit key of the epoch. If `false`, the computation is responsible for calling `Client.PreloadKeyStates(IInputContextPtr)`, `PreloadKeyStates(IInputContextPtr, TExtractKeysOptions)` or `PreloadKeyStates(THashSet<TKey>)` before `GetState`; `GetState` on a key that was not preloaded throws. Not allowed for companion computations. ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
Parameters of the selected external state manager implementation. The expected schema is determined by `class_name`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TExternalStateManagerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TFetcherInJoinerSpec.md -->
## NYT::NFlow::TFetcherInJoinerSpec {#NYT_NFlow_TFetcherInJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/connectors/servicelog/joiner.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/connectors/servicelog/joiner.h)

#|
|| **Parameter** | **Description** ||
|| `table_path` | **Type**: `NYT::NYPath::TRichYPath`
**Default value**: `TString("")`
Path to the table including the cluster (multiple clusters can be specified). ||
|| `value_columns` | **Type**: `std::optional<THashSet<std::string>>`
Non-key columns to read (by default, all columns are read). ||
|| `attempts` | **Type**: `long`
**Default value**: `1`
 ||
|| `retry_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `fetch_type` | **Type**: [NYT::NFlow::EFetchType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EFetchType)
**Default value**: `table_reader`
Important parameter that affects the type of load on YT. See the EFetchType description. ||
|| `prefix` | **Type**: `std::string`
**Default value**: `TString("")`
Column name prefix to be added for non-key table columns. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TFetcherInJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TFileProviderSpec.md -->
## NYT::NFlow::TFileProviderSpec {#NYT_NFlow_TFileProviderSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/file_provider.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/file_provider.h)

#|
|| **Parameter** | **Description** ||
|| `file_provider_class_name` | **Type**: `std::string`
**Required parameter**
Name of an `IFileProvider` implementation registered with `YT_FLOW_DEFINE_FILE_PROVIDER`. ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Parameters of the registered file-provider implementation. ||
|| `postprocess_command` | **Type**: `std::optional<std::string>`
Optional shell command that transforms the downloaded tree before resource initialization. The successful result is cached by provider revision and exact command. ||
|| `postprocess_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
Maximum command duration. Changing the timeout does not invalidate an already cached postprocessing result. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TFileProviderSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TFlowNodeConfig.md -->
## NYT::NFlow::TFlowNodeConfig {#NYT_NFlow_TFlowNodeConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/runner/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/runner/config.h)

#|
|| **Parameter** | **Description** ||
|| `logging` | **Type**: `NYT::TIntrusivePtr<`[NYT::NLogging::TLogManagerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_TLogManagerConfig)`>`
**Default value**:

```yson
{
    "high_backlog_watermark" = 100000;
    "low_backlog_watermark" = 100000;
    "min_disk_space" = 0;
    "rules" = [
        {
            "exclude_categories" = [];
            "max_level" = "maximum";
            "min_level" = "info";
            "writers" = [
                "Stderr";
            ];
        };
    ];
    "writers" = {
        "Stderr" = {
            "common_fields" = {};
            "enable_host_field" = %false;
            "enable_native_tags" = %false;
            "enable_source_location" = %false;
            "enable_system_fields" = %true;
            "format" = "plain_text";
            "type" = "stderr";
            "yson_format" = "text";
        };
    };
}
```
Logging settings. ||
|| `jaeger` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTracing::TJaegerTracerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTracing_TJaegerTracerConfig)`>`
**Default value**: `{}`
 ||
|| `pipe_io_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NPipeIO::TPipeIODispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NPipeIO_TPipeIODispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `solomon_registry` | **Type**: `NYT::TIntrusivePtr<`[NYT::NProfiling::TSolomonRegistryConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TSolomonRegistryConfig)`>`
**Default value**: `{}`
 ||
|| `error_backtrace_enricher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TBacktraceEnricherSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TBacktraceEnricherSpec)`>`
**Default value**: `{}`
 ||
|| `query_engine_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NQueryClient::TQueryEngineConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NQueryClient_TQueryEngineConfig)`>`
**Default value**: `{}`
 ||
|| `cluster_url` | **Type**: `std::string`
**Required parameter**
YTsaurus cluster to use. ||
|| `path` | **Type**: `TString`
**Required parameter**
Working directory of the pipeline on the `cluster_url` cluster. ||
|| `proxy_role` | **Type**: `std::optional<std::string>`
`rpc proxy` role. ||
|| `rpc_port` | **Type**: `int`
**Default value**: `0`
Main port for communication between workers and controllers, can be different for each instance. ||
|| `monitoring_port` | **Type**: `int`
**Default value**: `0`
API for obtaining metrics. ||
|| `companion` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NCompanion::TCompanionConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NCompanion_TCompanionConfig)`>`
Companion process parameters. Needed by any worker that runs a companion (Python, Java, Go, C++ companion). Filled in automatically for a vanilla launch. ||
|| `controller` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NController::TControllerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NController_TControllerConfig)`>`
**Default value**: `{}`
`Controller` parameters. ||
|| `worker` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NWorker::TWorkerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NWorker_TWorkerConfig)`>`
**Default value**: `{}`
`Worker` parameters. ||
|| `authenticator` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAuthenticatorConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAuthenticatorConfig)`>`
**Default value**: `{}`
 ||
|| `bus_server` | **Type**: `NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TBusServerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TBusServerConfig)`>`
**Default value**: `{}`
 ||
|| `rpc_server` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TServerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TServerConfig)`>`
**Default value**: `{}`
 ||
|| `core_dumper` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCoreDump::TCoreDumperConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCoreDump_TCoreDumperConfig)`>`
 ||
|| `solomon_exporter` | **Type**: `NYT::TIntrusivePtr<`[NYT::NProfiling::TSolomonExporterConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TSolomonExporterConfig)`>`
**Default value**: `{'enable_solomon_aggregates': true}`
 ||
|| `solomon_proxy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NProfiling::TSolomonProxyConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TSolomonProxyConfig)`>`
**Default value**: `{}`
 ||
|| `http_client_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NHttp::TClientConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NHttp_TClientConfig)`>`
**Default value**: `{}`
 ||
|| `https_client_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NHttps::TClientConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NHttps_TClientConfig)`>`
**Default value**: `{}`
 ||
|| `http_poller_threads` | **Type**: `int`
**Default value**: `1`
 ||
|| `abort_on_unrecognized_options` | **Type**: `bool`
**Default value**: `true`
When set to true, Flow Node will not start if there are unknown options in the config. ||
|| `ignore_singletons_dynamic_config` | **Type**: `bool`
**Default value**: `false`
 ||
|| `enable_porto_resource_tracker` | **Type**: `bool`
**Default value**: `true`
 ||
|#


{% cut "**Additional parameters**" %}


#|
|| `address_resolver` | **Type**: `NYT::TIntrusivePtr<`[NYT::NNet::TAddressResolverConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NNet_TAddressResolverConfig)`>`
**Default value**: `{}`
 ||
|| `grpc_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::NGrpc::TDispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_NGrpc_TDispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `tcmalloc` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTCMalloc::TTCMallocConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTCMalloc_TTCMallocConfig)`>`
**Default value**: `{'guarded_sampling_rate': 16777216}`
 ||
|| `fiber_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NConcurrency::TFiberManagerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NConcurrency_TFiberManagerConfig)`>`
**Default value**: `{}`
 ||
|| `resource_tracker` | **Type**: `NYT::TIntrusivePtr<`[NYT::NProfiling::TResourceTrackerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TResourceTrackerConfig)`>`
**Default value**: `{}`
 ||
|| `tcp_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TDispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TDispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `rpc_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TDispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TDispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `protobuf_interop` | **Type**: `NYT::TIntrusivePtr<`[NYT::NYson::TProtobufInteropConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYson_TProtobufInteropConfig)`>`
**Default value**: `{}`
 ||
|| `clients_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NClient::NCache::TClientsCacheConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NClient_NCache_TClientsCacheConfig)`>`
**Default value**: `{}`
Connection settings of the node's YT clients cache. It backs the pipeline connector, the queue log writer and everything that takes a client from `TComputationContext::ClientsCache` &mdash; computations, connectors and state managers. The pipeline authenticator builds its own client and is not governed by these settings. ||
|| `clients_cache_factory` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::INode>`
Parameters of the root YT clients cache factory installed via `SetRootClientsCacheFactory()`. Their schema is defined by the factory itself; the built-in factory ignores this block. ||
|| `enable_phdr_cache` | **Type**: `bool`
**Default value**: `true`
 ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TFlowNodeConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_THeavyHittersSpec.md -->
## NYT::NFlow::THeavyHittersSpec {#NYT_NFlow_THeavyHittersSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `window` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Time window. ||
|| `threshold` | **Type**: `double`
**Default value**: `0.01`
Keys that appear in the stream more often than `threshold` are considered heavy hitters. The algorithm uses `O(1 / threshold)` memory. ||
|| `limit` | **Type**: `long`
**Default value**: `5`
Maximum number of heavy hitter keys to show. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_THeavyHittersSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TIdlePartitionsSpec.md -->
## NYT::NFlow::TIdlePartitionsSpec {#NYT_NFlow_TIdlePartitionsSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `duration` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
The time a partition must be empty before it is considered to have no writes. ||
|| `max_ratio` | **Type**: `double`
**Default value**: `0.4`
The proportion of partitions that can be excluded from the watermark calculation by this logic. The conceptual purpose of this option is to protect against watermark advancement when the data provider stops writing messages to the queue due to an incident on their side. Setting the option to `1.0` effectively disables this protection. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TIdlePartitionsSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TInputOrderingSpec.md -->
## NYT::NFlow::TInputOrderingSpec {#NYT_NFlow_TInputOrderingSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `time_type` | **Type**: [NYT::NFlow::ETimeType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_ETimeType)
**Default value**: `event_time`
Time for sorting: `event_time`, `system_time`, `real_time` ||
|| `stream_delays` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, `[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `{}`
Delays for input streams. If a stream is not specified, there is no delay ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TInputOrderingSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TKeyStateRow.md -->
## NYT::NFlow::TKeyStateRow {#NYT_NFlow_TKeyStateRow}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

A single row in the `key_states`, `external_key_states`, `joined_external_key_states` sections of the `read-states` response.

#|
|| **Parameter** | **Description** ||
|| `computation_id` | **Type**: `NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>`
**Required parameter**
ID of the Computation to which the key belongs. ||
|| `key` | **Type**: `NYT::TStrongTypedef<NYT::NFlow::TCompactUnversionedOwningRow, NYT::NFlow::TKeyTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Key value (YSON Dict `{column = value; ...}` by `key_schema`). ||
|| `states` | **Type**: `THashMap<std::string, NYT::NYson::TYsonString>`
**Required parameter**
Content of the states under this key: a dict `state_name → YSON value`. The YSON value here is the serialized user payload of the state (the type is determined by the specific `State`/`ExternalState` in the Computation code; for built-in types like counters it is just a number, for arbitrary user structs &mdash; a YSON dict with all their fields).

For the `external_key_states` / `joined_external_key_states` sections, the state name matches the name of the external-state client (what the process function passes to `IRuntimeInitContext::InitExternalStateClient`, for example `/state`). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TKeyStateRow.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TKeyVisitorStreamSpec.md -->
## NYT::NFlow::TKeyVisitorStreamSpec {#NYT_NFlow_TKeyVisitorStreamSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `names` | **Type**: `std::optional<THashSet<std::string>>`
 ||
|| `external_names` | **Type**: `std::optional<THashSet<std::string>>`
 ||
|| `upstream_streams` | **Type**: `std::optional<THashSet<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>>>`
List of the computation's input and source streams whose completion the visitor waits for. Only meaningful with `finite=%true` (see the dynamic spec): with `finite=%false` the visitor never finishes, so the parameter has no effect.
When unset, the visitor waits for every input and source stream, that is, it finishes together with the whole input of the computation.
Narrowing the list matters for a cyclic topology: when the process function emits from `ProcessVisit` into an output that comes back to the same computation as an input stream. Such a stream only ends once the visitor stops scanning the state, so it cannot be followed.
In a production pipeline this makes no difference: sources are infinite, input streams never complete, and no value of `upstream_streams` starts a final pass. Narrowing is needed where all pipeline sources are finite and the pipeline must reach `completed`, that is, in integration tests. ||
|| `bucket_count` | **Type**: `int`
**Default value**: `8`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TKeyVisitorStreamSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TLateDataPartitionsSpec.md -->
## NYT::NFlow::TLateDataPartitionsSpec {#NYT_NFlow_TLateDataPartitionsSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `value` | **Type**: `NYT::TStrongTypedef<double, NYT::NFlow::TWatermarkPercentileTag, NYT::TStrongTypedefOptions{true}>`
**Default value**: `100.0`
 ||
|| `delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TLateDataPartitionsSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TLoadThroughputThrottlerSpec.md -->
## NYT::NFlow::TLoadThroughputThrottlerSpec {#NYT_NFlow_TLoadThroughputThrottlerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/misc/load_throughput_throttler.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/misc/load_throughput_throttler.h)

#|
|| **Parameter** | **Description** ||
|| `limit` | **Type**: `std::optional<double>`
 ||
|| `period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `alpha` | **Type**: `double`
**Default value**: `0.999`
 ||
|| `initial_row_size` | **Type**: `double`
**Default value**: `1000.0`
 ||
|| `initial_key_size` | **Type**: `double`
**Default value**: `500.0`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TLoadThroughputThrottlerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TMatchedStates.md -->
## NYT::NFlow::TMatchedStates {#NYT_NFlow_TMatchedStates}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

Breakdown of matched rows by category. Used in [TDeleteStatesResponse](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDeleteStatesResponse).

#|
|| **Parameter** | **Description** ||
|| `key_states` | **Type**: [NYT::NFlow::TMatchedStatesBucket](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TMatchedStatesBucket)
**Required parameter**
Matched rows in `key_states`. ||
|| `partition_states` | **Type**: [NYT::NFlow::TMatchedStatesBucket](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TMatchedStatesBucket)
**Required parameter**
Matched rows in `partition_states`. ||
|| `external_key_states` | **Type**: [NYT::NFlow::TMatchedStatesBucket](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TMatchedStatesBucket)
**Required parameter**
Matched rows in external_state_managers. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TMatchedStates.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TMatchedStatesBucket.md -->
## NYT::NFlow::TMatchedStatesBucket {#NYT_NFlow_TMatchedStatesBucket}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

Count of matched rows for one of the categories of the `delete-states` response.

#|
|| **Parameter** | **Description** ||
|| `total` | **Type**: `long`
**Default value**: `0`
Total number of matched rows in this category. ||
|| `details` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>, THashMap<std::string, long>>`
**Default value**: `{}`
Breakdown by `computation_id → state_name → number of rows`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TMatchedStatesBucket.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TMessageSerializer.md -->
## NYT::NFlow::TMessageSerializer {#NYT_NFlow_TMessageSerializer}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/message-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/message-inl.h)

#|
|| **Parameter** | **Description** ||
|| `message_id` | **Type**: `NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TMessageIdTag>`
**Required parameter**
Unique message ID. ||
|| `system_timestamp` | **Type**: `NYT::TStrongTypedef<unsigned long, NYT::NFlow::TSystemTimestampTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Timestamp of the specific message creation. ||
|| `alignment_timestamp` | **Type**: `NYT::TStrongTypedef<unsigned long, NYT::NFlow::TSystemTimestampTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
 ||
|| `event_timestamp` | **Type**: `NYT::TStrongTypedef<unsigned long, NYT::NFlow::TSystemTimestampTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Timestamp of the real event associated with this message. ||
|| `stream_id` | **Type**: `NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>`
**Required parameter**
The stream this message belongs to. ||
|| `payload` | **Type**: `NYT::TStrongTypedef<NYT::NFlow::TCompactUnversionedOwningRow, NYT::NFlow::TPayloadTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
The data itself. ||
|| `payload_schema` | **Type**: `NYT::TIntrusivePtr<NYT::NTableClient::TTableSchema>`
**Required parameter**
Payload schema, populated based on `stream_id`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TMessageSerializer.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TPartitionStateRow.md -->
## NYT::NFlow::TPartitionStateRow {#NYT_NFlow_TPartitionStateRow}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

A single row in the `partition_states` section of the `read-states` response.

#|
|| **Parameter** | **Description** ||
|| `computation_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>>`
ID of the Computation. May be absent if the partition is not bound to a specific Computation. ||
|| `partition_id` | **Type**: `NYT::TStrongTypedef<NYT::TGuid, NYT::NFlow::TPartitionIdTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Partition ID. ||
|| `states` | **Type**: `THashMap<std::string, NYT::NYson::TYsonString>`
**Required parameter**
Content of the partition states: a map `state_name → YSON value`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TPartitionStateRow.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TPipelineSpec.md -->
## NYT::NFlow::TPipelineSpec {#NYT_NFlow_TPipelineSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `validate_binary_version` | **Type**: `bool`
**Default value**: `false`
 ||
|| `binary_version` | **Type**: `std::string`
**Default value**: `TString("")`
 ||
|| `validate_binary_checksum` | **Type**: `bool`
**Default value**: `false`
 ||
|| `binary_checksum` | **Type**: `std::string`
**Default value**: `TString("")`
 ||
|| `computations` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TComputationSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TComputationSpec)`>>`
**Default value**: `{}`
A named enumeration of all pipeline nodes. Keys must match `[0-9A-Za-z_-]+`. ||
|| `resources` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TResourceIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TResourceSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TResourceSpec)`>>`
**Default value**: `{}`
A named enumeration of all resources. Keys must match `[0-9A-Za-z_-]+`. ||
|| `streams` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TStreamSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TStreamSpec)`>>`
**Default value**: `{}`
A named enumeration of all data streams. Keys must match `[0-9A-Za-z_-]+`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TPipelineSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TPivotFinderSpec.md -->
## NYT::NFlow::TPivotFinderSpec {#NYT_NFlow_TPivotFinderSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `part_count` | **Type**: `long`
**Default value**: `16`
 ||
|| `window_size` | **Type**: `long`
**Default value**: `16384`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TPivotFinderSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TReadStatesArg.md -->
## NYT::NFlow::TReadStatesArg {#NYT_NFlow_TReadStatesArg}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

Argument of the `read-states` command.

The command supports three usage modes (determined by the set of filled fields):

1. Only `computation_id` &mdash; all states for all partitions of the specified Computation.
2. `computation_id` + `key` &mdash; point lookup by key in `key_states` (and in external states) of the specified Computation.
3. Only `partition_id` &mdash; all `partition_states` of the specified partition. Additionally, if this partition belongs to `SourceComputation` (each such partition is responsible for exactly one `SourceKey`, unlike regular partitions with a `[LowerKey; UpperKey)` range), `key_states` under this `SourceKey` are also loaded immediately.

#|
|| **Parameter** | **Description** ||
|| `computation_id` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>>`
ID of the Computation. Required for modes 1 and 2 (see the command description). ||
|| `partition_id` | **Type**: `std::optional<NYT::TStrongTypedef<NYT::TGuid, NYT::NFlow::TPartitionIdTag, NYT::TStrongTypedefOptions{true}>>`
Partition ID. Required for mode 3 (see the command description). ||
|| `key` | **Type**: `std::optional<NYT::NYson::TYsonString>`
Key for point lookup (mode 2). Accepted in two forms:

* **YSON Dict** `{column = value; ...}` &mdash; for each target table (`key_states` of the Computation and each table of the external_state_manager/joiner with its own `key_schema_override`) the dict is decomposed by its key schema; columns absent from the schema are ignored.
* **YSON List** of positional values &mdash; passed to tables as-is, without adaptation to their schema. ||
|| `name` | **Type**: `std::optional<std::string>`
Filter by exact state name; applies to all sections (key/partition/external). If set, only rows with this state name are returned in each section. ||
|| `target` | **Type**: [NYT::NFlow::EFlowStateTarget](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EFlowStateTarget)
**Default value**: `all`
Which categories of states to request. Default: `all`. ||
|| `limit` | **Type**: `long`
**Default value**: `10`
Maximum number of rows returned in each response section independently.
Sections refer to the response fields: `key_states`, `partition_states`, `external_key_states`, `joined_external_key_states`. Each has its own budget of `limit` rows.

Within the `external_key_states` / `joined_external_key_states` sections, the budget is fairly divided among the active external states of this Computation. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TReadStatesArg.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TReadStatesResponse.md -->
## NYT::NFlow::TReadStatesResponse {#NYT_NFlow_TReadStatesResponse}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/controller/state_access.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/controller/state_access.h)

Response of the `read-states` command. Each section is populated independently according to its own `limit`.

#|
|| **Parameter** | **Description** ||
|| `key_states` | **Type**: `std::vector<`[NYT::NFlow::TKeyStateRow](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TKeyStateRow)`>`
**Default value**: `[]`
States bound to keys (by the Computation's key schema). ||
|| `partition_states` | **Type**: `std::vector<`[NYT::NFlow::TPartitionStateRow](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TPartitionStateRow)`>`
**Default value**: `[]`
States bound to partitions. ||
|| `external_key_states` | **Type**: `std::vector<`[NYT::NFlow::TKeyStateRow](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TKeyStateRow)`>`
**Default value**: `[]`
States from external_state_managers (mutable, can be deleted via `delete-states`). ||
|| `joined_external_key_states` | **Type**: `std::vector<`[NYT::NFlow::TKeyStateRow](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TKeyStateRow)`>`
**Default value**: `[]`
States observed via external_state_joiner (read-only, join sources). ||
|| `errors` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Errors that occurred when forming the response to the request itself (for example, failed to adapt the key to the schema of a specific external state or a `List`/`Lookup` to its table failed). These are not related to errors in the pipeline's state operation. If such an error occurs for one external state, the other sections are still populated successfully. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TReadStatesResponse.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TResourceDescription.md -->
## NYT::NFlow::TResourceDescription {#NYT_NFlow_TResourceDescription}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `alias` | **Type**: `std::optional<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TResourceIdTag>>`
 ||
|| `worker` | **Type**: `bool`
**Default value**: `true`
 ||
|| `controller` | **Type**: `bool`
**Default value**: `true`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TResourceDescription.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TResourceSpec.md -->
## NYT::NFlow::TResourceSpec {#NYT_NFlow_TResourceSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `resource_class_name` | **Type**: `std::string`
**Required parameter**
Name of the corresponding class.

Must be registered using the `YT_FLOW_DEFINE_RESOURCE` macro. ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Arbitrary parameters for the corresponding class. ||
|| `file_providers` | **Type**: `THashMap<NYT::TStrongTypedef<std::string, NYT::NFlow::TFileProviderIdTag, NYT::TStrongTypedefOptions{true}>, NYT::TIntrusivePtr<`[NYT::NFlow::TFileProviderSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TFileProviderSpec)`>>`
**Default value**: `{}`
Named file providers of the resource. The controller attaches a file snapshot to a target revision only after discovering every name; a controller-specific target spec may be published independently. Workers materialize the exact revisions from that target. Such resources are worker-only and must have `controller = %false` on every `required_resource_ids` path that can reach them. Keys must match `[0-9A-Za-z_-]+`. ||
|| `dependencies` | **Type**: `THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TResourceIdTag>, NYT::TIntrusivePtr<`[NYT::NFlow::TResourceDescription](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TResourceDescription)`>>`
**Default value**: `{}`
Resources that this resource depends on. Mirrors the structure of `required_resource_ids` from `Computation`. ||
|| `required_capabilities` | **Type**: `THashMap<std::string, long>`
**Default value**: `{}`
 ||
|| `preload_required` | **Type**: `bool`
**Default value**: `false`
 ||
|| `always_on` | **Type**: `bool`
**Default value**: `false`
If `true`, the resource is loaded in advance when the unit starts and stays in memory for its entire lifetime (never unloaded) instead of being loaded lazily on first access. It is loaded only on units where at least one computation requires it (see `worker` / `controller` in `required_resource_ids`): a resource needed only on a worker is not loaded on a controller, and a resource not required by any computation is not loaded at all. Mutually exclusive with `preload_required`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TResourceSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TSimpleExternalStateJoinerSpec.md -->
## NYT::NFlow::TSimpleExternalStateJoinerSpec {#NYT_NFlow_TSimpleExternalStateJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/computation/simple_external_state_manager.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/computation/simple_external_state_manager.h)

#|
|| **Parameter** | **Description** ||
|| `path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the dynamic table with states (including the cluster in a rich path). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TSimpleExternalStateJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TSimpleExternalStateManagerSpec.md -->
## NYT::NFlow::TSimpleExternalStateManagerSpec {#NYT_NFlow_TSimpleExternalStateManagerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/computation/simple_external_state_manager.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/computation/simple_external_state_manager.h)

#|
|| **Parameter** | **Description** ||
|| `path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the dynamic table with states (including the cluster in a rich path). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TSimpleExternalStateManagerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TSimpleRunnerConfig.md -->
## NYT::NFlow::TSimpleRunnerConfig {#NYT_NFlow_TSimpleRunnerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/runner/simple_runner_program.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/runner/simple_runner_program.h)

#|
|| **Parameter** | **Description** ||
|| `logging` | **Type**: `NYT::TIntrusivePtr<`[NYT::NLogging::TLogManagerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_TLogManagerConfig)`>`
**Default value**:

```yson
{
    "high_backlog_watermark" = 100000;
    "low_backlog_watermark" = 100000;
    "min_disk_space" = 0;
    "rules" = [
        {
            "exclude_categories" = [];
            "max_level" = "maximum";
            "min_level" = "info";
            "writers" = [
                "Stderr";
            ];
        };
    ];
    "writers" = {
        "Stderr" = {
            "common_fields" = {};
            "enable_host_field" = %false;
            "enable_native_tags" = %false;
            "enable_source_location" = %false;
            "enable_system_fields" = %true;
            "format" = "plain_text";
            "type" = "stderr";
            "yson_format" = "text";
        };
    };
}
```
Logging settings. ||
|| `jaeger` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTracing::TJaegerTracerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTracing_TJaegerTracerConfig)`>`
**Default value**: `{}`
 ||
|| `pipe_io_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NPipeIO::TPipeIODispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NPipeIO_TPipeIODispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `solomon_registry` | **Type**: `NYT::TIntrusivePtr<`[NYT::NProfiling::TSolomonRegistryConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TSolomonRegistryConfig)`>`
**Default value**: `{}`
 ||
|| `error_backtrace_enricher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TBacktraceEnricherSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TBacktraceEnricherSpec)`>`
**Default value**: `{}`
 ||
|| `query_engine_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NQueryClient::TQueryEngineConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NQueryClient_TQueryEngineConfig)`>`
**Default value**: `{}`
 ||
|| `cluster_url` | **Type**: `std::string`
**Required parameter**
Name of the cluster where the pipeline is located. The tail after the last `/` is treated as a proxy role and takes precedence over `proxy_role` &mdash; e.g. `hahn/flow` means cluster `hahn` with role `flow`. ||
|| `proxy_role` | **Type**: `std::optional<std::string>`
**Required parameter**
The [proxy role](https://ytsaurus.tech/docs/en/user-guide/proxy/about.md#rpc_proxy) to use for performing operations on the pipeline. ||
|| `path` | **Type**: `TString`
**Required parameter**
Path to the pipeline on YTsaurus. ||
|| `spec` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TPipelineSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TPipelineSpec)`>`
**Required parameter**
Static spec with which to start the pipeline. ||
|| `dynamic_spec` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDynamicPipelineSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDynamicPipelineSpec)`>`
**Default value**: `{}`
Dynamic spec with which to start the pipeline. ||
|| `abort_on_unrecognized_options` | **Type**: `bool`
**Default value**: `false`
 ||
|| `abort_on_specs_parseability_error` | **Type**: `bool`
**Default value**: `false`
 ||
|| `vanilla` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TVanillaConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TVanillaConfig)`>`
If set and `enable=%true`, the runner starts a vanilla operation on YTsaurus and runs the federation inside it, instead of starting the controller/workers locally. ||
|| `set_flow_core_target` | **Type**: `bool`
**Default value**: `true`
 ||
|| `direct_controller_commands` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TDirectControllerCommandsConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TDirectControllerCommandsConfig)`>`
**Default value**: `{}`
 ||
|#


{% cut "**Additional parameters**" %}


#|
|| `address_resolver` | **Type**: `NYT::TIntrusivePtr<`[NYT::NNet::TAddressResolverConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NNet_TAddressResolverConfig)`>`
**Default value**: `{}`
 ||
|| `grpc_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::NGrpc::TDispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_NGrpc_TDispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `tcmalloc` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTCMalloc::TTCMallocConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTCMalloc_TTCMallocConfig)`>`
**Default value**: `{}`
 ||
|| `fiber_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NConcurrency::TFiberManagerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NConcurrency_TFiberManagerConfig)`>`
**Default value**: `{}`
 ||
|| `resource_tracker` | **Type**: `NYT::TIntrusivePtr<`[NYT::NProfiling::TResourceTrackerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TResourceTrackerConfig)`>`
**Default value**: `{}`
 ||
|| `tcp_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TDispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TDispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `rpc_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TDispatcherConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TDispatcherConfig)`>`
**Default value**: `{}`
 ||
|| `protobuf_interop` | **Type**: `NYT::TIntrusivePtr<`[NYT::NYson::TProtobufInteropConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYson_TProtobufInteropConfig)`>`
**Default value**: `{}`
 ||
|| `clients_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NClient::NCache::TClientsCacheConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NClient_NCache_TClientsCacheConfig)`>`
**Default value**: `{}`
Connection settings of the YT clients cache the runner uses to talk to the pipeline cluster. They do not extend to the vanilla launcher, which builds its own clients. ||
|| `clients_cache_factory` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::INode>`
Parameters of the root YT clients cache factory installed via `SetRootClientsCacheFactory()`. Their schema is defined by the factory itself; the built-in factory ignores this block. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TSimpleRunnerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TSinkSpec.md -->
## NYT::NFlow::TSinkSpec {#NYT_NFlow_TSinkSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `sink_class_name` | **Type**: `std::string`
**Default value**: `TString("")`
Name of the corresponding class.

Must be registered using `YT_FLOW_DEFINE_SINK`. ||
|| `input_stream_ids` | **Type**: `THashSet<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>>`
**Default value**: `[]`
List of input streams.

Only streams specified in `output_stream_ids` of the entire `Computation` are allowed here. ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Arbitrary parameters for the corresponding class. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TSinkSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TSourceSpec.md -->
## NYT::NFlow::TSourceSpec {#NYT_NFlow_TSourceSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `source_class_name` | **Type**: `std::string`
**Default value**: `TString("")`
Name of the corresponding class.

Must be registered using `YT_FLOW_DEFINE_SOURCE`. ||
|| `parameters` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::IMapNode>`
**Default value**: `{}`
Arbitrary parameters for the corresponding class. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TSourceSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TStateJoinSpec.md -->
## NYT::NFlow::TStateJoinSpec {#NYT_NFlow_TStateJoinSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `key_schema_override` | **Type**: `NYT::TIntrusivePtr<NYT::NTableClient::TTableSchema>`
If set, the schema is used as the joiner key instead of the computation's `group_by_schema`. ||
|| `key_provider_streams` | **Type**: `std::optional<THashSet<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>>>`
If set, the joiner keys are taken only from messages and timers with the specified `stream_id`; `nullopt` means "from all computation input streams". ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TStateJoinSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TStateJoinerSpec.md -->
## NYT::NFlow::TStateJoinerSpec {#NYT_NFlow_TStateJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `computation_id` | **Type**: `NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TComputationIdTag>`
**Required parameter**
The `Computation` whose internal state is read by this joiner. ||
|| `state_name` | **Type**: `std::string`
**Required parameter**
The state client name of the target `Computation` — the prefix passed to `InitClient` (starts with `/`). ||
|| `join_on` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TStateJoinSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TStateJoinSpec)`>`
**Default value**: `{}`
Description of the mapping between the computation input stream keys and the target `Computation`'s state key (see `TStateJoinSpec`). `key_schema_override` must match the target `Computation`'s `group_by_schema`. ||
|| `auto_preload` | **Type**: `bool`
**Default value**: `true`
If `true` (default), the framework automatically calls `PreloadKeyStates` on this joiner before each `DoProcess`, forming keys using `join_on`. If `false`, the computation is responsible for calling `PreloadKeyStates` before `GetState`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TStateJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TStaticTableKeyVisitorJoinerSpec.md -->
## NYT::NFlow::TStaticTableKeyVisitorJoinerSpec {#NYT_NFlow_TStaticTableKeyVisitorJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/computation/static_table_key_visitor_joiner.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/computation/static_table_key_visitor_joiner.h)

#|
|| **Parameter** | **Description** ||
|| `path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to a static sorted source table (including the cluster in a rich path). Its key column prefix must match the computation's `group_by_schema` by names and types. The computed (partition) column must be materialized with the values of its expression. ||
|| `unavailable_source_policy` | **Type**: [NYT::NFlow::EUnavailableSourcePolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EUnavailableSourcePolicy)
**Default value**: `retry`
Behavior when reading the source fails (exhausting the `read_attempts` budget).
`retry` (default) — the error drops the traversal iteration and reading is retried. The traversal does not advance past the unread range.
`mark_unreadable` — the error is swallowed, the traversal continues, and keys in the unread range are resolved with an uninitialized accessor (`IsInitialized() == false`). ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TStaticTableKeyVisitorJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TStreamSpec.md -->
## NYT::NFlow::TStreamSpec {#NYT_NFlow_TStreamSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `class_name` | **Type**: `std::optional<std::string>`
 ||
|| `schema` | **Type**: `NYT::TIntrusivePtr<NYT::NTableClient::TTableSchema>`
**Required parameter**
Stream schema. It is a dynamic table schema. Cannot contain sorting or computed columns.

We recommend making schema changes by completely stopping the pipeline. In this case, no `output` messages remain inside the pipeline. ||
|| `migration_function` | **Type**: `std::string`
**Default value**: `NYT::NFlow::DefaultMigrationFunction`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TStreamSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TTableFetcherSpec.md -->
## NYT::NFlow::TTableFetcherSpec {#NYT_NFlow_TTableFetcherSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/connectors/servicelog/fetcher.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/connectors/servicelog/fetcher.h)

#|
|| **Parameter** | **Description** ||
|| `table_path` | **Type**: `NYT::NYPath::TRichYPath`
**Default value**: `TString("")`
Path to the table including the cluster (multiple clusters can be specified). ||
|| `value_columns` | **Type**: `std::optional<THashSet<std::string>>`
Non-key columns to read (by default, all columns are read). ||
|| `attempts` | **Type**: `long`
**Default value**: `1`
 ||
|| `retry_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `fetch_type` | **Type**: [NYT::NFlow::EFetchType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EFetchType)
**Default value**: `table_reader`
Important parameter that affects the type of load on YT. See the EFetchType description. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TTableFetcherSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TTableJoinerSpec.md -->
## NYT::NFlow::TTableJoinerSpec {#NYT_NFlow_TTableJoinerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/connectors/servicelog/joiner.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/connectors/servicelog/joiner.h)

#|
|| **Parameter** | **Description** ||
|| `fetchers` | **Type**: `std::vector<NYT::TIntrusivePtr<`[NYT::NFlow::TFetcherInJoinerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TFetcherInJoinerSpec)`>>`
**Default value**: `[]`
Fetcher specs. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TTableJoinerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TTimerSerializer.md -->
## NYT::NFlow::TTimerSerializer {#NYT_NFlow_TTimerSerializer}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/timer-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/timer-inl.h)

#|
|| **Parameter** | **Description** ||
|| `message_id` | **Type**: `NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TMessageIdTag>`
**Required parameter**
Unique timer ID. ||
|| `system_timestamp` | **Type**: `NYT::TStrongTypedef<unsigned long, NYT::NFlow::TSystemTimestampTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Timestamp of the timer creation. ||
|| `event_timestamp` | **Type**: `NYT::TStrongTypedef<unsigned long, NYT::NFlow::TSystemTimestampTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Timestamp of the real event associated with this timer. ||
|| `stream_id` | **Type**: `NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>`
**Required parameter**
The stream this message belongs to. ||
|| `key` | **Type**: `NYT::TStrongTypedef<NYT::NFlow::TCompactUnversionedOwningRow, NYT::NFlow::TKeyTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Key of the timer. ||
|| `key_schema` | **Type**: `NYT::TIntrusivePtr<NYT::NTableClient::TTableSchema>`
**Required parameter**
Key schema, matches the `group_by_schema` of the corresponding `Computation`. ||
|| `trigger_timestamp` | **Type**: `NYT::TStrongTypedef<unsigned long, NYT::NFlow::TSystemTimestampTag, NYT::TStrongTypedefOptions{true}>`
**Required parameter**
Time for the timer to fire. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TTimerSerializer.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TTimerSpec.md -->
## NYT::NFlow::TTimerSpec {#NYT_NFlow_TTimerSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `time_type` | **Type**: [NYT::NFlow::ETimeType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_ETimeType)
**Default value**: `event_time`
The time type used by the timer: `event_time`, `system_time`, `real_time` ||
|| `streams` | **Type**: `std::optional<THashSet<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>>>`
List of streams that the timer monitors. ||
|| `streams_with_delays` | **Type**: `std::optional<THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, `[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>>`
List of streams that the timer monitors with an individual delay specified ||
|| `deduplicate_equal_timestamps` | **Type**: `bool`
**Default value**: `true`
Enables timer deduplication: if you try to create a timer with the same key and `trigger_timestamp`, only one timer remains — the one with the smaller `EventTimestamp` value ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TTimerSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnavailablePartitionGroupsSpec.md -->
## NYT::NFlow::TUnavailablePartitionGroupsSpec {#NYT_NFlow_TUnavailablePartitionGroupsSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

**This structure has no main parameters.**
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnavailablePartitionGroupsSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TSwiftMapCompanionComputation.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NCompanion::TSwiftMapCompanionComputation&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TSwiftMapCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `allow_batching_with_relaxed_guarantees` | **Type**: `bool`
**Default value**: `false`
Allows combining several input messages into one output message (batching). Useful for folding many small messages into one larger message to reduce the message count load on downstream partitions. Default is `%false`: each output message is produced by exactly one parent. `MessageId` is deterministically inherited from the parent, providing exactly-once semantics with deterministic user functions. When set to `%true`, an output message can have multiple parents. A parent is considered processed only when all its children are processed. On restarts, batch boundaries may differ, so the same parent message could end up in multiple different batched children — downstream computations must be prepared to see each parent's contents more than once (at-least-once semantics). Additionally, batched output messages receive a `MessageId` derived deterministically from the set of parent `MessageId`s: a replay of the same batch yields the same `MessageId` and is deduplicated, while a batch with a different composition yields a new one. This means that the order of messages by `MessageId` within a single key on the downstream `Computation` side can be disrupted. If subsequent pipeline stages rely on `MessageId` ordering within a key, you must rewrite that logic to account for this. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TSwiftMapCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TSwiftOrderedSourceCompanionComputation.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NCompanion::TSwiftOrderedSourceCompanionComputation&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TSwiftOrderedSourceCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

**This structure has no main parameters.**
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TSwiftOrderedSourceCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TTransformCompanionComputation.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NCompanion::TTransformCompanionComputation&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TTransformCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `processing_mode` | **Type**: [NYT::NFlow::EProcessingMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EProcessingMode)
**Default value**: `exactly_once`
 ||
|| `internal_states` | **Type**: `std::optional<THashSet<std::string>>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TTransformCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TTransformOrderedSourceCompanionComputation.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NCompanion::TTransformOrderedSourceCompanionComputation&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TTransformOrderedSourceCompanionComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `internal_states` | **Type**: `std::optional<THashSet<std::string>>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NCompanion_TTransformOrderedSourceCompanionComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NSortedDynamicTable_TAsyncSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NSortedDynamicTable::TAsyncSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NSortedDynamicTable_TAsyncSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `table_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the target sorted dynamic table with the cluster specified. ||
|| `column_filter` | **Type**: `std::optional<THashSet<std::string>>`
Which columns from the message to write to the table (default &mdash; all). When using the `delete_rows` parameter, you must specify the key columns of the target table, otherwise deletions will fail. ||
|| `aggregate_columns` | **Type**: `std::optional<THashSet<std::string>>`
Aggregate writes are unsupported: omit this parameter or provide an empty list. An asynchronous write may replay an already committed batch after recovery, which makes non-idempotent aggregation unsafe. ||
|| `delete_rows` | **Type**: `bool`
**Default value**: `false`
If set to `true`, rows will be deleted instead of inserted. In this mode, make sure that `column_filter` selects the key columns of the target table. ||
|| `require_sync_replica` | **Type**: `bool`
**Default value**: `true`
If set to `false`, the presence of a synchronous replica is not checked when writing rows to the target table. The default value is `true`. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_partition_count_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
How often the controller should update the number of tablets in the table (the controller changes the number of receiver channels accordingly). For a chaos replicated table, the controller uses the enabled data replica with the lexicographically smallest replica id; its current sync/async mode does not affect the choice. Resharding that replica may change the number of receiver channels. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NSortedDynamicTable_TAsyncSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NSortedDynamicTable_TSyncSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NSortedDynamicTable::TSyncSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NSortedDynamicTable_TSyncSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `table_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the target sorted dynamic table with the cluster specified. ||
|| `column_filter` | **Type**: `std::optional<THashSet<std::string>>`
Which columns from the message to write to the table (default &mdash; all). When using the `delete_rows` parameter, you must specify the key columns of the target table, otherwise deletions will fail. ||
|| `aggregate_columns` | **Type**: `std::optional<THashSet<std::string>>`
List of columns for which the aggregation function is considered during writing. By default, the value in the column is overwritten. ||
|| `delete_rows` | **Type**: `bool`
**Default value**: `false`
If set to `true`, rows will be deleted instead of inserted. In this mode, it is important that the key columns of the target table are selected in `column_filter`.

{% note info %}

A Sink can work in either insert or delete mode, but not simultaneously. If you need both insert and delete functionality, use StateManager.

{% endnote %} ||
|| `require_sync_replica` | **Type**: `bool`
**Default value**: `true`
If set to `false`, the presence of a synchronous replica is not checked when writing rows to the target table. The default value is `true` — the check is performed. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_partition_count_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
How often the controller should update the number of tablets in the table (the controller changes the number of receiver channels accordingly). For a chaos replicated table, the controller uses the enabled data replica with the lexicographically smallest replica id; its current sync/async mode does not affect the choice. Resharding that replica may change the number of receiver channels. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NSortedDynamicTable_TSyncSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnector_TArrivalOrderTableSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NStaticTableConnector::TArrivalOrderTableSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnector_TArrivalOrderTableSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `output_directory` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Directory for the output static tables. Its `@progress` attribute holds the delivery progress: the `(pipeline, computation, sink id)` owner, the shared table sequence and a per-partition frontier. Every sink needs its own directory: if it finds a foreign owner, the sink fails and asks for the attribute to be removed by hand. ||
|| `table_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Step of the gap-free table grid. An empty table for step `T` is created without a gap only when the input stream system watermark is known and strictly greater than `T + table_period`. Empty tables are never created ahead of the wall clock. ||
|| `table_ttl` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Required parameter**
Output table lifetime: a table is removed `table_ttl` after its `table_timestamp` (via Cypress `expiration_time`). The `table_ttl / table_period` ratio is capped at 40000 by the Cypress directory child count limit. ||
|| `table_name_format` | **Type**: `std::string`
**Default value**: `%Y-%m-%dT%H:%M:%SZ`
Format of the UTC timestamp in a table name. It must render the timestamp losslessly (validated by a round-trip), or different slots would collide on one name. ||
|| `data_weight_column` | **Type**: `std::optional<std::string>`
Optional column with a user-defined message weight for the `max_data_weight` limit (`int64` or `uint64`, non-negative). Without it, and for `null` values, the message byte size is used. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnector_TArrivalOrderTableSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnector_TSource.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NStaticTableConnector::TSource&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnector_TSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `finite` | **Type**: `bool`
**Default value**: `false`
Treat the source as finite: remember the number of messages in it on startup and transition the stream to the completed state after all those messages are read. ||
|| `tables` | **Type**: `std::optional<std::vector<NYT::NYPath::TRichYPath>>`
List of tables to read with cluster specifications. This parameter is an alternative to `tables_path`. Each element must be a table: a symlink is not dereferenced to the target table, and any non-table node causes an error. ||
|| `tables_path` | **Type**: `std::optional<NYT::NYPath::TRichYPath>`
Path to a directory with static tables, including either one cluster or an ordered list of replica clusters. This parameter is an alternative to `tables`. ||
|| `table_name_filter` | **Type**: `NYT::TIntrusivePtr<NYT::NRe2::TRe2>`
Regular expression to filter tables by name: only tables whose name matches the expression are read. The expression syntax is [RE2](https://github.com/google/re2/wiki/Syntax). ||
|| `event_timestamp_locator` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NStaticTableConnector::TTableTimestampLocatorSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NStaticTableConnector_TTableTimestampLocatorSpec)`>`
**Default value**: `{'attribute': 'key'}`
By default, takes the timestamp from the table name. This time corresponds to the data creation time and is forwarded to the EventTimestamp of messages. Tables with the same timestamp are ordered persistently; new tables must not appear behind the already processed event-time frontier. ||
|| `system_timestamp_locator` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NStaticTableConnector::TTableTimestampLocatorSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NStaticTableConnector_TTableTimestampLocatorSpec)`>`
**Default value**: `{'attribute': 'creation_time'}`
By default, takes the timestamp from the table creation time. This time corresponds to when the data is written to the source. That is, the moment when the pipeline can see this data and start reading. This time is forwarded to the SystemTimestamp of messages. ||
|| `use_planned_timestamps` | **Type**: `bool`
**Default value**: `false`
Use the persisted planned start time of each row range for both input message timestamps. The plan is fixed when the controller starts a table and survives restarts and rate changes. Timestamp locators still determine table discovery and ordering. Disabled by default. ||
|| `ignore_symlinks` | **Type**: `bool`
**Default value**: `false`
A flag that allows ignoring symlinks inside the table folder. ||
|| `skip_non_table_nodes` | **Type**: `bool`
**Default value**: `false`
Skip non-table nodes in the input directory instead of failing. ||
|| `idle_watermark_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `3600000`
The delay for advancing the watermark from the current time while the source is not reading a table. A table immediately advances the watermark to its event timestamp without subtracting this delay. Set this field to `#` to disable clock-based advancement; new tables still advance the watermark. ||
|| `failover_delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
For replicated input, how long the active cluster must stay unavailable before the current table fails over. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_info_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
Period for refreshing the source's auxiliary partition information. A connector may use this tick for status requests and read-session liveness checks. ||
|| `byte_size_alpha` | **Type**: `double`
**Default value**: `0.05`
Exponential smoothing coefficient for the average byte total and message count per offset: larger values make the estimate react to new data faster. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnector_TSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnectorV2_TSource.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::NStaticTableConnectorV2::TSource&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnectorV2_TSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `finite` | **Type**: `bool`
**Default value**: `false`
Treat the source as finite: remember the number of messages in it on startup and transition the stream to the completed state after all those messages are read. ||
|| `tables` | **Type**: `std::optional<std::vector<NYT::NYPath::TRichYPath>>`
List of tables to read with cluster specifications. This parameter is an alternative to `tables_path`. Each element must be a table: a symlink is not dereferenced to the target table, and any non-table node causes an error. ||
|| `tables_path` | **Type**: `std::optional<NYT::NYPath::TRichYPath>`
Path to a directory with static tables, including either one cluster or an ordered list of replica clusters. This parameter is an alternative to `tables`. ||
|| `table_name_filter` | **Type**: `NYT::TIntrusivePtr<NYT::NRe2::TRe2>`
Regular expression to filter tables by name: only tables whose name matches the expression are read. The expression syntax is [RE2](https://github.com/google/re2/wiki/Syntax). ||
|| `event_timestamp_locator` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NStaticTableConnector::TTableTimestampLocatorSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NStaticTableConnector_TTableTimestampLocatorSpec)`>`
**Default value**: `{'attribute': 'key'}`
By default, takes the timestamp from the table name. This time corresponds to the data creation time and is forwarded to the EventTimestamp of messages. Tables with the same timestamp are ordered persistently; new tables must not appear behind the already processed event-time frontier. ||
|| `system_timestamp_locator` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::NStaticTableConnector::TTableTimestampLocatorSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_NStaticTableConnector_TTableTimestampLocatorSpec)`>`
**Default value**: `{'attribute': 'creation_time'}`
By default, takes the timestamp from the table creation time. This time corresponds to when the data is written to the source. That is, the moment when the pipeline can see this data and start reading. This time is forwarded to the SystemTimestamp of messages. ||
|| `use_planned_timestamps` | **Type**: `bool`
**Default value**: `false`
Use the persisted planned start time of each row range for both input message timestamps. The plan is fixed when the controller starts a table and survives restarts and rate changes. Timestamp locators still determine table discovery and ordering. Disabled by default. ||
|| `ignore_symlinks` | **Type**: `bool`
**Default value**: `false`
A flag that allows ignoring symlinks inside the table folder. ||
|| `skip_non_table_nodes` | **Type**: `bool`
**Default value**: `false`
Skip non-table nodes in the input directory instead of failing. ||
|| `idle_watermark_delay` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `3600000`
The delay for advancing the watermark from the current time while the source is not reading a table. A table immediately advances the watermark to its event timestamp without subtracting this delay. Set this field to `#` to disable clock-based advancement; new tables still advance the watermark. ||
|| `failover_delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
For replicated input, how long the active cluster must stay unavailable before the current table fails over. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_info_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
Period for refreshing the source's auxiliary partition information. A connector may use this tick for status requests and read-session liveness checks. ||
|| `byte_size_alpha` | **Type**: `double`
**Default value**: `0.05`
Exponential smoothing coefficient for the average byte total and message count per offset: larger values make the estimate react to new data faster. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_NStaticTableConnectorV2_TSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncHttpSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TAsyncHttpSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncHttpSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyParameters)`>`
Optional at-most-once delivery strategy. Connector support varies; check the connector documentation before enabling it. ||
|| `url` | **Type**: `std::string`
**Required parameter**
Target HTTP or HTTPS URL. The URL must contain a host. ||
|| `payload_column` | **Type**: `std::string`
**Required parameter**
Name of the payload column. The input stream must contain exactly one String column with this name. A non-null value becomes the request body byte-for-byte unchanged, whether it contains protobuf, YSON, JSON, or arbitrary String bytes. A null value is acknowledged and skipped without an HTTP request. ||
|| `headers` | **Type**: `THashMap<std::string, std::string>`
**Default value**: `{}`
Static HTTP request headers. Header names must be valid HTTP tokens. Set `Content-Type` here if the receiver uses it to interpret the opaque request body. Header values are stored in the pipeline Spec in Cypress and are readable by principals with Spec read access, including through spec dumps. There is no secret-safe header mechanism yet. Do not put OAuth tokens, API tokens, or other secrets here. Do not use this sink with endpoints that require secret headers unless access controls and an external mechanism make that safe. ||
|| `idempotency_header` | **Type**: `std::string`
**Default value**: `Idempotency-Key`
Name of the per-message idempotency header. Its value is the hexadecimal representation of the stable Flow message ID and remains unchanged across retries and replay. The default is `Idempotency-Key`. Set another valid name to rename the header or an empty string to disable it. A static header with the same name is rejected. ||
|| `keep_alive` | **Type**: `bool`
**Default value**: `true`
Whether to reuse HTTP connections. Every configured HTTP sink in every active partition job owns a distinct sink instance, client, and idle-connection pool. When disabled, the pool keeps no idle connections regardless of `max_idle_connections`. ||
|| `max_redirect_count` | **Type**: `int`
**Default value**: `0`
Maximum number of HTTP redirects followed across all retry attempts for one delivery while preserving the POST method, body, and headers. The default is zero, so redirect following is opt-in. Trust every possible redirect destination. ||
|| `max_idle_connections` | **Type**: `int`
**Default value**: `8`
Maximum number of idle connections retained by each HTTP or HTTPS client of every configured sink instance and active partition job when `keep_alive` is enabled. The default is eight per client, so a sink that follows redirects across both schemes can retain up to twice that number. An ordered-source partition corresponds to one source key, so there is no additional per-key multiplier. If several sinks target the same endpoint, size its capacity as the sum across all configured sinks and active partition jobs. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncHttpSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncMultiClusterQueueSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TAsyncMultiClusterQueueSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncMultiClusterQueueSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `queue_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the queue including the cluster. ||
|| `write_flow_queue_meta` | **Type**: `bool`
**Default value**: `false`
Whether to write meta to the queue (watermarks are written in meta). ||
|| `flow_queue_meta_column` | **Type**: `std::string`
**Default value**: `flow_queue_meta`
Column to which to write meta. ||
|| `producer_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the queue producer with the cluster specified. ||
|| `require_sync_replica` | **Type**: `bool`
**Default value**: `true`
The eponymous parameter when writing to the queue. Whether write to the queue without synchronous replicas is allowed. ||
|| `tablet_index_expression` | **Type**: `std::optional<std::string>`
Verbatim routing mode. A QL expression (builtins only, e.g. `farm_hash`) over the message columns whose value is written to the system column `$tablet_index` verbatim. Mutually exclusive with `tablet_index_routing_hash_expression`; when neither expression is set, routing is off (`$tablet_index` is not written and the tablet is chosen by the driver). Sharded queues are inconvenient to operate (object&rarr;tablet affinity is tightly coupled and a reshard remaps keys), so enable routing only when genuinely needed. Routing is supported only on sync queue sinks; async sinks reject the routing params at spec load (YTFLOW-766). ||
|| `tablet_index_routing_hash_expression` | **Type**: `std::optional<std::string>`
Hash routing mode. A QL expression (builtins only, e.g. `farm_hash`) yielding a `uint64` hash that is reduced to a tablet index by `tablet_index_routing_hash_policy` over `tablet_count`. Mutually exclusive with `tablet_index_expression`. Supported only on sync queue sinks; async sinks reject the routing params (YTFLOW-766). ||
|| `tablet_index_routing_hash_policy` | **Type**: `std::optional<`[NYT::NFlow::EQueueTabletIndexRoutingHashPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EQueueTabletIndexRoutingHashPolicy)`>`
The policy for reducing the `tablet_index_routing_hash_expression` hash to a tablet index. Required together with it. `range` &mdash; contiguous equal-width hash ranges (rangeSize = 2^64 / tablet_count), recommended: a consumer range-partitioned by the same key reads only its own tablet. `modulo` &mdash; `hash % tablet_count`; discouraged: Flow computations are range-partitioned by key, so a modulo-partitioned queue forces every reader to read every tablet (a full mesh on read). ||
|| `tablet_count` | **Type**: `std::optional<long>`
The number of tablets used to reduce `tablet_index_routing_hash_expression` to a tablet index. Optional. When unset, the sink periodically re-reads the target queue's `@tablet_count` (from the master cache) and follows a reshard without a restart. When set explicitly, the value is fixed (no queue read) and a reshard is reflected only by changing the config. ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyParameters)`>`
Optional at-most-once delivery strategy. Connector support varies; check the connector documentation before enabling it. ||
|| `column_filter` | **Type**: `std::optional<THashSet<std::string>>`
Which columns from the message to write to the queue (default &mdash; all). ||
|| `use_clusters` | **Type**: `bool`
**Default value**: `false`
Whether to use `<clusters=[...]>` instead of `<cluster=...>` from the rich path in producer and queue ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_partition_count_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
How often the controller should update the partition count in the queue (the controller changes the computation partition count according to the queue partition count). ||
|| `update_partition_count_retry_min_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Initial delay before retrying a failed partition count update, subject to jitter. The value is capped by `update_partition_count_period`; subsequent delays increase exponentially. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncMultiClusterQueueSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncQueueSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TAsyncQueueSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncQueueSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `queue_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the queue including the cluster. ||
|| `write_flow_queue_meta` | **Type**: `bool`
**Default value**: `false`
Whether to write meta to the queue (watermarks are written in meta). ||
|| `flow_queue_meta_column` | **Type**: `std::string`
**Default value**: `flow_queue_meta`
Column to which to write meta. ||
|| `producer_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the queue producer with the cluster specified. ||
|| `require_sync_replica` | **Type**: `bool`
**Default value**: `true`
The eponymous parameter when writing to the queue. Whether write to the queue without synchronous replicas is allowed. ||
|| `tablet_index_expression` | **Type**: `std::optional<std::string>`
Verbatim routing mode. A QL expression (builtins only, e.g. `farm_hash`) over the message columns whose value is written to the system column `$tablet_index` verbatim. Mutually exclusive with `tablet_index_routing_hash_expression`; when neither expression is set, routing is off (`$tablet_index` is not written and the tablet is chosen by the driver). Sharded queues are inconvenient to operate (object&rarr;tablet affinity is tightly coupled and a reshard remaps keys), so enable routing only when genuinely needed. Routing is supported only on sync queue sinks; async sinks reject the routing params at spec load (YTFLOW-766). ||
|| `tablet_index_routing_hash_expression` | **Type**: `std::optional<std::string>`
Hash routing mode. A QL expression (builtins only, e.g. `farm_hash`) yielding a `uint64` hash that is reduced to a tablet index by `tablet_index_routing_hash_policy` over `tablet_count`. Mutually exclusive with `tablet_index_expression`. Supported only on sync queue sinks; async sinks reject the routing params (YTFLOW-766). ||
|| `tablet_index_routing_hash_policy` | **Type**: `std::optional<`[NYT::NFlow::EQueueTabletIndexRoutingHashPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EQueueTabletIndexRoutingHashPolicy)`>`
The policy for reducing the `tablet_index_routing_hash_expression` hash to a tablet index. Required together with it. `range` &mdash; contiguous equal-width hash ranges (rangeSize = 2^64 / tablet_count), recommended: a consumer range-partitioned by the same key reads only its own tablet. `modulo` &mdash; `hash % tablet_count`; discouraged: Flow computations are range-partitioned by key, so a modulo-partitioned queue forces every reader to read every tablet (a full mesh on read). ||
|| `tablet_count` | **Type**: `std::optional<long>`
The number of tablets used to reduce `tablet_index_routing_hash_expression` to a tablet index. Optional. When unset, the sink periodically re-reads the target queue's `@tablet_count` (from the master cache) and follows a reshard without a restart. When set explicitly, the value is fixed (no queue read) and a reshard is reflected only by changing the config. ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyParameters)`>`
Optional at-most-once delivery strategy. Connector support varies; check the connector documentation before enabling it. ||
|| `column_filter` | **Type**: `std::optional<THashSet<std::string>>`
Which columns from the message to write to the queue (default &mdash; all). ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_partition_count_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
How often the controller should update the partition count in the queue (the controller changes the computation partition count according to the queue partition count). ||
|| `update_partition_count_retry_min_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Initial delay before retrying a failed partition count update, subject to jitter. The value is capped by `update_partition_count_period`; subsequent delays increase exponentially. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAsyncQueueSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAtLeastOnceClickHouseSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TAtLeastOnceClickHouseSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TAtLeastOnceClickHouseSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `host` | **Type**: `std::string`
**Default value**: `TString("")`
The single ClickHouse host of the unsharded form. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `hosts` or `shard_hosts` is set: exactly one of the three host forms must be present in the spec. The host must be reachable and expose a table with a supported engine and the complete ordered schema `(name, type, default_kind, default_expression)`. ||
|| `port` | **Type**: `unsigned short`
**Default value**: `9000`
Native TCP port. Shared by all shards. ||
|| `hosts` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Flat list of hosts of one unsharded table, all sharing `port`. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `host` or `shard_hosts` is set. Every host must be reachable and match the engine and complete ordered schema `(name, type, default_kind, default_expression)`. For `Replicated*MergeTree`, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. A single-entry list is rejected — use `host` instead. ||
|| `host_selection_policy` | **Type**: [NYT::NFlow::EClickHouseHostSelectionPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseHostSelectionPolicy)
**Default value**: `ordered_round_robin`
Endpoint order within each shard. The default `ordered_round_robin` preserves the configured order. `random_start` chooses a uniformly distributed starting position once when a client is constructed and rotates the list. clickhouse-cpp then exhausts all endpoints in round-robin order. The policy does not change row routing, deduplication tokens, or the topology fingerprint. ||
|| `shard_hosts` | **Type**: `THashMap<std::string, std::vector<std::string>>`
**Default value**: `{}`
Mapping from a shard name to the list of that shard's hosts, used by the multi-shard form. Required by `TShardedClickHouseBatchingSink` and rejected by `TClickHouseBatchingSink`; the other sink classes accept any of the three host forms. Every endpoint must be reachable. Within each shard, the engine and complete ordered schema `(name, type, default_kind, default_expression)` must match; schemas must also match across shards. For replicas, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. Shard names must be non-empty and consist of letters, digits, `_` and `-`; a shard's host list must not be empty. A shard name is a permanent identifier: it is part of the deduplication token. ||
|| `sharding_key_columns` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Columns whose values produce the routing key. Requires `shard_hosts`: the unsharded forms reject this parameter during spec validation. An empty list routes by message id, that is, without co-location. ||
|| `user` | **Type**: `std::string`
**Default value**: `default`
ClickHouse user. ||
|| `password_env_var` | **Type**: `std::string`
**Default value**: `TString("")`
Name of the environment variable holding the password; resolved via `GetEnv` when the client is created. An empty value means connecting without a password. ||
|| `database` | **Type**: `std::string`
**Default value**: `default`
Database of the target table. Shared by all shards. ||
|| `table` | **Type**: `std::string`
**Required parameter**
Target table. Shared by all shards, so `<database>.<table>` must exist on every host of every shard. ||
|| `codec` | **Type**: [NYT::NFlow::EClickHouseCodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseCodec)
**Default value**: `lz4`
Native protocol compression. ||
|| `enable_tls` | **Type**: `bool`
**Default value**: `false`
Connect over TCP+TLS instead of plain TCP. The port is not changed implicitly: set `port` to the server's secure native port (usually `9440`). ||
|| `tls_ca_files` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Paths to root certificate (CA) files used to verify the server certificate. An empty list is valid when TLS is disabled; when TLS is enabled, it means that the system root certificates are used. A nonempty list requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_ca_directory` | **Type**: `std::string`
**Default value**: `TString("")`
Path to a directory of root certificates (CA) used to verify the server certificate. An empty value is valid when TLS is disabled. A nonempty path requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_skip_verification` | **Type**: `bool`
**Default value**: `false`
Skip TLS session verification (the server certificate and so on). **Insecure**; use only for test environments with self-signed certificates. Setting this option to `true` requires `enable_tls = true`; otherwise configuration validation fails. The default value, `false`, is valid when TLS is disabled. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAtLeastOnceClickHouseSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAtMostOnceClickHouseSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TAtMostOnceClickHouseSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TAtMostOnceClickHouseSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `host` | **Type**: `std::string`
**Default value**: `TString("")`
The single ClickHouse host of the unsharded form. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `hosts` or `shard_hosts` is set: exactly one of the three host forms must be present in the spec. The host must be reachable and expose a table with a supported engine and the complete ordered schema `(name, type, default_kind, default_expression)`. ||
|| `port` | **Type**: `unsigned short`
**Default value**: `9000`
Native TCP port. Shared by all shards. ||
|| `hosts` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Flat list of hosts of one unsharded table, all sharing `port`. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `host` or `shard_hosts` is set. Every host must be reachable and match the engine and complete ordered schema `(name, type, default_kind, default_expression)`. For `Replicated*MergeTree`, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. A single-entry list is rejected — use `host` instead. ||
|| `host_selection_policy` | **Type**: [NYT::NFlow::EClickHouseHostSelectionPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseHostSelectionPolicy)
**Default value**: `ordered_round_robin`
Endpoint order within each shard. The default `ordered_round_robin` preserves the configured order. `random_start` chooses a uniformly distributed starting position once when a client is constructed and rotates the list. clickhouse-cpp then exhausts all endpoints in round-robin order. The policy does not change row routing, deduplication tokens, or the topology fingerprint. ||
|| `shard_hosts` | **Type**: `THashMap<std::string, std::vector<std::string>>`
**Default value**: `{}`
Mapping from a shard name to the list of that shard's hosts, used by the multi-shard form. Required by `TShardedClickHouseBatchingSink` and rejected by `TClickHouseBatchingSink`; the other sink classes accept any of the three host forms. Every endpoint must be reachable. Within each shard, the engine and complete ordered schema `(name, type, default_kind, default_expression)` must match; schemas must also match across shards. For replicas, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. Shard names must be non-empty and consist of letters, digits, `_` and `-`; a shard's host list must not be empty. A shard name is a permanent identifier: it is part of the deduplication token. ||
|| `sharding_key_columns` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Columns whose values produce the routing key. Requires `shard_hosts`: the unsharded forms reject this parameter during spec validation. An empty list routes by message id, that is, without co-location. ||
|| `user` | **Type**: `std::string`
**Default value**: `default`
ClickHouse user. ||
|| `password_env_var` | **Type**: `std::string`
**Default value**: `TString("")`
Name of the environment variable holding the password; resolved via `GetEnv` when the client is created. An empty value means connecting without a password. ||
|| `database` | **Type**: `std::string`
**Default value**: `default`
Database of the target table. Shared by all shards. ||
|| `table` | **Type**: `std::string`
**Required parameter**
Target table. Shared by all shards, so `<database>.<table>` must exist on every host of every shard. ||
|| `codec` | **Type**: [NYT::NFlow::EClickHouseCodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseCodec)
**Default value**: `lz4`
Native protocol compression. ||
|| `enable_tls` | **Type**: `bool`
**Default value**: `false`
Connect over TCP+TLS instead of plain TCP. The port is not changed implicitly: set `port` to the server's secure native port (usually `9440`). ||
|| `tls_ca_files` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Paths to root certificate (CA) files used to verify the server certificate. An empty list is valid when TLS is disabled; when TLS is enabled, it means that the system root certificates are used. A nonempty list requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_ca_directory` | **Type**: `std::string`
**Default value**: `TString("")`
Path to a directory of root certificates (CA) used to verify the server certificate. An empty value is valid when TLS is disabled. A nonempty path requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_skip_verification` | **Type**: `bool`
**Default value**: `false`
Skip TLS session verification (the server certificate and so on). **Insecure**; use only for test environments with self-signed certificates. Setting this option to `true` requires `enable_tls = true`; otherwise configuration validation fails. The default value, `false`, is valid when TLS is disabled. ||
|| `at_most_once_strategy` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TAtMostOnceStrategyParameters](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TAtMostOnceStrategyParameters)`>`
Optional at-most-once delivery strategy. Connector support varies; check the connector documentation before enabling it. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TAtMostOnceClickHouseSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TClickHouseBatchingSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TClickHouseBatchingSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TClickHouseBatchingSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `host` | **Type**: `std::string`
**Default value**: `TString("")`
The single ClickHouse host of the unsharded form. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `hosts` or `shard_hosts` is set: exactly one of the three host forms must be present in the spec. The host must be reachable and expose a table with a supported engine and the complete ordered schema `(name, type, default_kind, default_expression)`. ||
|| `port` | **Type**: `unsigned short`
**Default value**: `9000`
Native TCP port. Shared by all shards. ||
|| `hosts` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Flat list of hosts of one unsharded table, all sharing `port`. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `host` or `shard_hosts` is set. Every host must be reachable and match the engine and complete ordered schema `(name, type, default_kind, default_expression)`. For `Replicated*MergeTree`, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. A single-entry list is rejected — use `host` instead. ||
|| `host_selection_policy` | **Type**: [NYT::NFlow::EClickHouseHostSelectionPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseHostSelectionPolicy)
**Default value**: `ordered_round_robin`
Endpoint order within each shard. The default `ordered_round_robin` preserves the configured order. `random_start` chooses a uniformly distributed starting position once when a client is constructed and rotates the list. clickhouse-cpp then exhausts all endpoints in round-robin order. The policy does not change row routing, deduplication tokens, or the topology fingerprint. ||
|| `shard_hosts` | **Type**: `THashMap<std::string, std::vector<std::string>>`
**Default value**: `{}`
Mapping from a shard name to the list of that shard's hosts, used by the multi-shard form. Required by `TShardedClickHouseBatchingSink` and rejected by `TClickHouseBatchingSink`; the other sink classes accept any of the three host forms. Every endpoint must be reachable. Within each shard, the engine and complete ordered schema `(name, type, default_kind, default_expression)` must match; schemas must also match across shards. For replicas, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. Shard names must be non-empty and consist of letters, digits, `_` and `-`; a shard's host list must not be empty. A shard name is a permanent identifier: it is part of the deduplication token. ||
|| `sharding_key_columns` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Columns whose values produce the routing key. Requires `shard_hosts`: the unsharded forms reject this parameter during spec validation. An empty list routes by message id, that is, without co-location. ||
|| `user` | **Type**: `std::string`
**Default value**: `default`
ClickHouse user. ||
|| `password_env_var` | **Type**: `std::string`
**Default value**: `TString("")`
Name of the environment variable holding the password; resolved via `GetEnv` when the client is created. An empty value means connecting without a password. ||
|| `database` | **Type**: `std::string`
**Default value**: `default`
Database of the target table. Shared by all shards. ||
|| `table` | **Type**: `std::string`
**Required parameter**
Target table. Shared by all shards, so `<database>.<table>` must exist on every host of every shard. ||
|| `codec` | **Type**: [NYT::NFlow::EClickHouseCodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseCodec)
**Default value**: `lz4`
Native protocol compression. ||
|| `enable_tls` | **Type**: `bool`
**Default value**: `false`
Connect over TCP+TLS instead of plain TCP. The port is not changed implicitly: set `port` to the server's secure native port (usually `9440`). ||
|| `tls_ca_files` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Paths to root certificate (CA) files used to verify the server certificate. An empty list is valid when TLS is disabled; when TLS is enabled, it means that the system root certificates are used. A nonempty list requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_ca_directory` | **Type**: `std::string`
**Default value**: `TString("")`
Path to a directory of root certificates (CA) used to verify the server certificate. An empty value is valid when TLS is disabled. A nonempty path requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_skip_verification` | **Type**: `bool`
**Default value**: `false`
Skip TLS session verification (the server certificate and so on). **Insecure**; use only for test environments with self-signed certificates. Setting this option to `true` requires `enable_tls = true`; otherwise configuration validation fails. The default value, `false`, is valid when TLS is disabled. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TClickHouseBatchingSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TPassthroughComputation.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TPassthroughComputation&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TPassthroughComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `processing_mode` | **Type**: [NYT::NFlow::EProcessingMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EProcessingMode)
**Default value**: `exactly_once`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TPassthroughComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TQueueSource.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TQueueSource&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TQueueSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `finite` | **Type**: `bool`
**Default value**: `false`
Treat the source as finite: remember the number of messages in it on startup and transition the stream to the completed state after all those messages are read. ||
|| `queue_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the queue including the cluster. ||
|| `consumer_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the queue consumer with the cluster specified. ||
|| `try_parse_flow_queue_meta` | **Type**: `bool`
**Default value**: `true`
Whether to retrieve and parse meta from the queue (the meta contains watermarks provided by the writer to the queue). ||
|| `flow_queue_meta_column` | **Type**: `std::string`
**Default value**: `flow_queue_meta`
Column from which to retrieve meta. ||
|| `ignore_malformed_flow_queue_meta` | **Type**: `bool`
**Default value**: `false`
Whether to ignore invalid meta or fail. ||
|| `partition_filter` | **Type**: `std::optional<std::vector<std::pair<int, int>>>`
 ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_info_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
Period for refreshing the source's auxiliary partition information. A connector may use this tick for status requests and read-session liveness checks. ||
|| `byte_size_alpha` | **Type**: `double`
**Default value**: `0.05`
Exponential smoothing coefficient for the average byte total and message count per offset: larger values make the estimate react to new data faster. ||
|| `update_partition_count_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
How often the controller should update the partition count in the queue (the controller changes the computation partition count according to the queue partition count). ||
|| `update_partition_count_retry_min_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Initial delay before retrying a failed partition count update, subject to jitter. The value is capped by `update_partition_count_period`; subsequent delays increase exponentially. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TQueueSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TRandomSource.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TRandomSource&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TRandomSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `finite` | **Type**: `bool`
**Default value**: `false`
Treat the source as finite: remember the number of messages in it on startup and transition the stream to the completed state after all those messages are read. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_info_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
Period for refreshing the source's auxiliary partition information. A connector may use this tick for status requests and read-session liveness checks. ||
|| `byte_size_alpha` | **Type**: `double`
**Default value**: `0.05`
Exponential smoothing coefficient for the average byte total and message count per offset: larger values make the estimate react to new data faster. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TRandomSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TServiceLogSource.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TServiceLogSource&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TServiceLogSource}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `finite` | **Type**: `bool`
**Default value**: `false`
Treat the source as finite: remember the number of messages in it on startup and transition the stream to the completed state after all those messages are read. ||
|| `table_joiner` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TTableJoinerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TTableJoinerSpec)`>`
**Default value**: `{}`
Joiner spec. ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_info_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
Period for refreshing the source's auxiliary partition information. A connector may use this tick for status requests and read-session liveness checks. ||
|| `byte_size_alpha` | **Type**: `double`
**Default value**: `0.05`
Exponential smoothing coefficient for the average byte total and message count per offset: larger values make the estimate react to new data faster. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TServiceLogSource.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TShardedClickHouseBatchingSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TShardedClickHouseBatchingSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TShardedClickHouseBatchingSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `host` | **Type**: `std::string`
**Default value**: `TString("")`
The single ClickHouse host of the unsharded form. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `hosts` or `shard_hosts` is set: exactly one of the three host forms must be present in the spec. The host must be reachable and expose a table with a supported engine and the complete ordered schema `(name, type, default_kind, default_expression)`. ||
|| `port` | **Type**: `unsigned short`
**Default value**: `9000`
Native TCP port. Shared by all shards. ||
|| `hosts` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Flat list of hosts of one unsharded table, all sharing `port`. For exactly-once, this form is used with `TClickHouseBatchingSink`. Required unless `host` or `shard_hosts` is set. Every host must be reachable and match the engine and complete ordered schema `(name, type, default_kind, default_expression)`. For `Replicated*MergeTree`, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. A single-entry list is rejected — use `host` instead. ||
|| `host_selection_policy` | **Type**: [NYT::NFlow::EClickHouseHostSelectionPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseHostSelectionPolicy)
**Default value**: `ordered_round_robin`
Endpoint order within each shard. The default `ordered_round_robin` preserves the configured order. `random_start` chooses a uniformly distributed starting position once when a client is constructed and rotates the list. clickhouse-cpp then exhausts all endpoints in round-robin order. The policy does not change row routing, deduplication tokens, or the topology fingerprint. ||
|| `shard_hosts` | **Type**: `THashMap<std::string, std::vector<std::string>>`
**Default value**: `{}`
Mapping from a shard name to the list of that shard's hosts, used by the multi-shard form. Required by `TShardedClickHouseBatchingSink` and rejected by `TClickHouseBatchingSink`; the other sink classes accept any of the three host forms. Every endpoint must be reachable. Within each shard, the engine and complete ordered schema `(name, type, default_kind, default_expression)` must match; schemas must also match across shards. For replicas, `zookeeper_name` and `zookeeper_path` must match, while `replica_name` may differ. Multiple hosts with plain `MergeTree` or `SharedMergeTree` are rejected; single-host `SharedMergeTree` remains supported. This target-identity rule applies to all delivery guarantees. Shard names must be non-empty and consist of letters, digits, `_` and `-`; a shard's host list must not be empty. A shard name is a permanent identifier: it is part of the deduplication token. ||
|| `sharding_key_columns` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Columns whose values produce the routing key. Requires `shard_hosts`: the unsharded forms reject this parameter during spec validation. An empty list routes by message id, that is, without co-location. ||
|| `user` | **Type**: `std::string`
**Default value**: `default`
ClickHouse user. ||
|| `password_env_var` | **Type**: `std::string`
**Default value**: `TString("")`
Name of the environment variable holding the password; resolved via `GetEnv` when the client is created. An empty value means connecting without a password. ||
|| `database` | **Type**: `std::string`
**Default value**: `default`
Database of the target table. Shared by all shards. ||
|| `table` | **Type**: `std::string`
**Required parameter**
Target table. Shared by all shards, so `<database>.<table>` must exist on every host of every shard. ||
|| `codec` | **Type**: [NYT::NFlow::EClickHouseCodec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EClickHouseCodec)
**Default value**: `lz4`
Native protocol compression. ||
|| `enable_tls` | **Type**: `bool`
**Default value**: `false`
Connect over TCP+TLS instead of plain TCP. The port is not changed implicitly: set `port` to the server's secure native port (usually `9440`). ||
|| `tls_ca_files` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Paths to root certificate (CA) files used to verify the server certificate. An empty list is valid when TLS is disabled; when TLS is enabled, it means that the system root certificates are used. A nonempty list requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_ca_directory` | **Type**: `std::string`
**Default value**: `TString("")`
Path to a directory of root certificates (CA) used to verify the server certificate. An empty value is valid when TLS is disabled. A nonempty path requires `enable_tls = true`; otherwise configuration validation fails. ||
|| `tls_skip_verification` | **Type**: `bool`
**Default value**: `false`
Skip TLS session verification (the server certificate and so on). **Insecure**; use only for test environments with self-signed certificates. Setting this option to `true` requires `enable_tls = true`; otherwise configuration validation fails. The default value, `false`, is valid when TLS is disabled. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TShardedClickHouseBatchingSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TSwiftPassthroughComputation.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TSwiftPassthroughComputation&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TSwiftPassthroughComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `allow_batching_with_relaxed_guarantees` | **Type**: `bool`
**Default value**: `false`
Allows combining several input messages into one output message (batching). Useful for folding many small messages into one larger message to reduce the message count load on downstream partitions. Default is `%false`: each output message is produced by exactly one parent. `MessageId` is deterministically inherited from the parent, providing exactly-once semantics with deterministic user functions. When set to `%true`, an output message can have multiple parents. A parent is considered processed only when all its children are processed. On restarts, batch boundaries may differ, so the same parent message could end up in multiple different batched children — downstream computations must be prepared to see each parent's contents more than once (at-least-once semantics). Additionally, batched output messages receive a `MessageId` derived deterministically from the set of parent `MessageId`s: a replay of the same batch yields the same `MessageId` and is deduplicated, while a batch with a different composition yields a new one. This means that the order of messages by `MessageId` within a single key on the downstream `Computation` side can be disrupted. If subsequent pipeline stages rely on `MessageId` ordering within a key, you must rewrite that logic to account for this. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TSwiftPassthroughComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TSwiftPassthroughOrderedSourceComputation.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TSwiftPassthroughOrderedSourceComputation&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TSwiftPassthroughOrderedSourceComputation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

**This structure has no main parameters.**
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TSwiftPassthroughOrderedSourceComputation.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TSyncQueueSink.md -->
## NYT::NFlow::TUnitedParameters&lt;NYT::NFlow::TSyncQueueSink&gt; {#NYT_NFlow_TUnitedParameters_NYT_NFlow_TSyncQueueSink}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/registry-inl.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/registry-inl.h)

#|
|| **Parameter** | **Description** ||
|| `queue_path` | **Type**: `NYT::NYPath::TRichYPath`
**Required parameter**
Path to the queue including the cluster. ||
|| `write_flow_queue_meta` | **Type**: `bool`
**Default value**: `false`
Whether to write meta to the queue (watermarks are written in meta). ||
|| `flow_queue_meta_column` | **Type**: `std::string`
**Default value**: `flow_queue_meta`
Column to which to write meta. ||
|| `tablet_index_expression` | **Type**: `std::optional<std::string>`
Verbatim routing mode. A QL expression (builtins only, e.g. `farm_hash`) over the message columns whose value is written to the system column `$tablet_index` verbatim. Mutually exclusive with `tablet_index_routing_hash_expression`; when neither expression is set, routing is off (`$tablet_index` is not written and the tablet is chosen by the driver). Sharded queues are inconvenient to operate (object&rarr;tablet affinity is tightly coupled and a reshard remaps keys), so enable routing only when genuinely needed. Routing is supported only on sync queue sinks; async sinks reject the routing params at spec load (YTFLOW-766). ||
|| `tablet_index_routing_hash_expression` | **Type**: `std::optional<std::string>`
Hash routing mode. A QL expression (builtins only, e.g. `farm_hash`) yielding a `uint64` hash that is reduced to a tablet index by `tablet_index_routing_hash_policy` over `tablet_count`. Mutually exclusive with `tablet_index_expression`. Supported only on sync queue sinks; async sinks reject the routing params (YTFLOW-766). ||
|| `tablet_index_routing_hash_policy` | **Type**: `std::optional<`[NYT::NFlow::EQueueTabletIndexRoutingHashPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_EQueueTabletIndexRoutingHashPolicy)`>`
The policy for reducing the `tablet_index_routing_hash_expression` hash to a tablet index. Required together with it. `range` &mdash; contiguous equal-width hash ranges (rangeSize = 2^64 / tablet_count), recommended: a consumer range-partitioned by the same key reads only its own tablet. `modulo` &mdash; `hash % tablet_count`; discouraged: Flow computations are range-partitioned by key, so a modulo-partitioned queue forces every reader to read every tablet (a full mesh on read). ||
|| `tablet_count` | **Type**: `std::optional<long>`
The number of tablets used to reduce `tablet_index_routing_hash_expression` to a tablet index. Optional. When unset, the sink periodically re-reads the target queue's `@tablet_count` (from the master cache) and follows a reshard without a restart. When set explicitly, the value is fixed (no queue read) and a reshard is reflected only by changing the config. ||
|| `column_filter` | **Type**: `std::optional<THashSet<std::string>>`
Which columns from the message to write to the queue (default &mdash; all). ||
|#


{% cut "**Additional parameters**" %}


#|
|| `update_partition_count_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
How often the controller should update the partition count in the queue (the controller changes the computation partition count according to the queue partition count). ||
|| `update_partition_count_retry_min_backoff` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
Initial delay before retrying a failed partition count update, subject to jitter. The value is capped by `update_partition_count_period`; subsequent delays increase exponentially. ||
|#


{% endcut %}
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TUnitedParameters_NYT_NFlow_TSyncQueueSink.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TVanillaConfig.md -->
## NYT::NFlow::TVanillaConfig {#NYT_NFlow_TVanillaConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/runner/vanilla_launcher.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/runner/vanilla_launcher.h)

#|
|| **Parameter** | **Description** ||
|| `enable` | **Type**: `bool`
**Default value**: `false`
Enable vanilla mode. If `%false`, the block is ignored. ||
|| `pool` | **Type**: `std::string`
**Required parameter**
The pool in which the vanilla operation runs. ||
|| `worker` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TVanillaTaskConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TVanillaTaskConfig)`>`
**Required parameter**
Config for worker jobs (number of jobs and resource limits). You must set `count`. ||
|| `controller` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TVanillaTaskConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TVanillaTaskConfig)`>`
**Default value**: `{'count': 1}`
Config for controller jobs (number of jobs and resource limits). If not set, one job with default limits is used. ||
|| `runtime_cluster` | **Type**: `std::optional<std::string>`
The cluster on which the vanilla operation runs. Defaults to the pipeline's `cluster_url`. ||
|| `runtime_proxy_role` | **Type**: `std::optional<std::string>`
The RPC proxy role for the `runtime_cluster` (the pipeline cluster's role may not exist on that cluster). Taken into account only when `runtime_cluster` differs from the pipeline cluster. ||
|| `cache_path` | **Type**: `TString`
**Default value**: `//tmp/yt_wrapper/file_storage/new_cache`
A content-addressed cache to which job files are uploaded (shared by all flow operations on the cluster). A long-term copy in the pipeline folder is a cheap `CopyNode` from this cache. ||
|| `max_failed_job_count` | **Type**: `unsigned long`
**Default value**: `10000`
The maximum number of failed jobs after which the vanilla operation fails. ||
|| `max_stderr_count` | **Type**: `int`
**Default value**: `150`
 ||
|| `wait_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
Timeout for waiting for pipeline states during a graceful stop of the previous vanilla operation. ||
|| `alias` | **Type**: `std::optional<std::string>`
An explicit alias for the vanilla operation. If not set, it is generated as `*flow-runner <cluster>:<path>`. ||
|| `title` | **Type**: `std::optional<std::string>`
Title of the vanilla operation. ||
|| `network_project` | **Type**: `std::optional<std::string>`
The network project for a vanilla operation has no default in open-source builds. ||
|| `proxy_url_aliasing_rules` | **Type**: `THashMap<std::string, std::string>`
**Default value**: `{}`
Aliases for proxy URLs, injected into the flow-server inside the vanilla jobs. ||
|| `secret_env` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
 ||
|| `node_config` | **Type**: `NYT::TIntrusivePtr<NYT::NYTree::INode>`
An arbitrary YSON patch applied on top of the default `TFlowNodeConfig` inside the vanilla jobs. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TVanillaConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TVanillaTaskConfig.md -->
## NYT::NFlow::TVanillaTaskConfig {#NYT_NFlow_TVanillaTaskConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/runner/vanilla_launcher.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/runner/vanilla_launcher.h)

#|
|| **Parameter** | **Description** ||
|| `count` | **Type**: `int`
**Required parameter**
Number of jobs for the task (controller or worker) in the vanilla operation. ||
|| `memory_limit` | **Type**: `std::optional<`[NYT::NYTree::TSize](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYTree_TSize)`>`
Memory limit per job. If not set, a single shared default of `18 GiB` is used, the same for the controller and worker. ||
|| `cpu_limit` | **Type**: `std::optional<int>`
CPU limit per job. If not set, a single shared default of `6` is used, the same for the controller and worker. ||
|| `set_container_cpu_limit` | **Type**: `bool`
**Default value**: `false`
Request a container CPU ceiling equal to `cpu_limit` on execution backends that support it. When `%false`, the runner leaves the operation field unset. ||
|| `port_count` | **Type**: `std::optional<int>`
Number of ports to request from YT (ports are provided via `YT_PORT_<i>` and override fixed ports from node-config): `YT_PORT_0` is `rpc_port` (and `bus_server.port`), `YT_PORT_1` is `monitoring_port`, `YT_PORT_2` is `companion.port`. Needed on hosts with a shared network where fixed ports of neighboring jobs would collide: `2` for the controller and a worker without a companion, `3` for a worker with a companion (Python, Java, Go, C++ companion). A launch without a network project fills it in automatically (`2` for the controller, `3` for the worker); an explicit `0` keeps the fixed ports. Once the worker's `port_count` is positive, the fixed `companion.port = 10082` is no longer filled in: a worker with a companion and fewer than three ports fails to start instead of dialing a neighboring job's companion. ||
|| `local_files` | **Type**: `THashMap<std::string, std::string>`
**Default value**: `{}`
 ||
|| `cypress_files` | **Type**: `THashMap<std::string, std::string>`
**Default value**: `{}`
 ||
|| `layers` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
Cypress paths of the porto layers mounted into the task's root filesystem. A non-empty list on at least one task enables porto jobs for the whole vanilla operation. ||
|| `system_layer_path` | **Type**: `std::optional<std::string>`
The task's base OS layer; overrides the default system layer. ||
|| `docker_image` | **Type**: `std::optional<std::string>`
Docker image for the task's root filesystem, for clusters whose job environment pulls images rather than mounting porto layers. Mutually exclusive with `layers`. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TVanillaTaskConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TWatermarkAlignmentSpec.md -->
## NYT::NFlow::TWatermarkAlignmentSpec {#NYT_NFlow_TWatermarkAlignmentSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `group_name` | **Type**: `NYT::TStrongTypedef<std::string, NYT::NFlow::TWatermarkAlignmentGroupTag, NYT::TStrongTypedefOptions{true}>`
**Default value**: `default-alignment-group`
The group name. ||
|| `drift_bound` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `20m`
The maximum possible lead of an individual partition's watermark over the group's watermark. ||
|| `read_delays` | **Type**: `std::optional<THashMap<NYT::NFlow::TStrongIdentifierTypedef<NYT::NFlow::TStreamIdTag>, `[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>>`
An advanced use option. If the `EventTimestamp` of an output message is greater than `EventWatermark - Delay` for at least one specified stream, reading is paused. If misconfigured, this option can cause a complete read stall. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TWatermarkAlignmentSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TWatermarkGeneratorSpec.md -->
## NYT::NFlow::TWatermarkGeneratorSpec {#NYT_NFlow_TWatermarkGeneratorSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `use_source_watermark` | **Type**: `bool`
**Default value**: `false`
Use `SourceWatermark` for `EventWatermark` generation. This option completely disables all heuristics for determining `EventWatermark`. Use it strictly when the input stream contains special markers with `EventWatermark`. ||
|| `out_of_orderness_bound` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `0`
The upper bound on possible event reordering, used for estimating `EventWatermark`. Event reordering is not accounted for by default. ||
|| `idle_partitions` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TIdlePartitionsSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TIdlePartitionsSpec)`>`
Heuristic settings for ignoring partitions with zero write throughput. ||
|| `late_data_partitions` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TLateDataPartitionsSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TLateDataPartitionsSpec)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TWatermarkGeneratorSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TWatermarkPercentileSpec.md -->
## NYT::NFlow::TWatermarkPercentileSpec {#NYT_NFlow_TWatermarkPercentileSpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `value` | **Type**: `NYT::TStrongTypedef<double, NYT::NFlow::TWatermarkPercentileTag, NYT::TStrongTypedefOptions{true}>`
**Default value**: `100.0`
The percentage of events unconditionally considered for `EventWatermark` calculation. ||
|| `delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
The freshness threshold for events below the selected percentile. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TWatermarkPercentileSpec.md -->

<!-- source: en/flow/generated_docs/NYT_NFlow_TWatermarkStrategySpec.md -->
## NYT::NFlow::TWatermarkStrategySpec {#NYT_NFlow_TWatermarkStrategySpec}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/flow/library/cpp/common/spec.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/flow/library/cpp/common/spec.h)

#|
|| **Parameter** | **Description** ||
|| `event_timestamp_assigner` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TEventTimestampAssignerSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TEventTimestampAssignerSpec)`>`
**Default value**: `{}`
Automatic population of `EventTimestamp` for all `output` messages based on the value of a specified column. ||
|| `watermark_generator` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TWatermarkGeneratorSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TWatermarkGeneratorSpec)`>`
Settings for the `EventWatermark` generation algorithm. For a `Computation` with at least one `source`, omitting this parameter is equivalent to an empty block with default settings. A multi-source `Computation` is processed as independent single-source computations: for each `source`, unavailable-group, idle-partition, and late-data-partition heuristics run independently in that order, and the prepared partitions are merged only afterwards. `idle_partitions.max_ratio` is applied separately to each `source`, and availability-group suppression decisions in one `source` do not affect another. Therefore, a fully idle `source` is not treated as a partial-idle stall and does not by itself raise `/idle_partitions_watermark_stall`, even if it gates the merged `Computation` watermark while another `source` remains active. Availability-group identifiers do not need to match across sources. ||
|| `watermark_alignment` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TWatermarkAlignmentSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TWatermarkAlignmentSpec)`>`
Settings for aligning `source` across different partitions, including those of different `Computation` instances. ||
|| `watermark_percentile` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TWatermarkPercentileSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TWatermarkPercentileSpec)`>`
**Default value**: `{}`
Settings for a "percentile" `EventWatermark`. Used to ignore the oldest events within a configured percentage. ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NFlow_TWatermarkStrategySpec.md -->

<!-- source: en/flow/generated_docs/NYT_NHttp_TClientConfig.md -->
## NYT::NHttp::TClientConfig {#NYT_NHttp_TClientConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/http/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/http/config.h)

#|
|| **Parameter** | **Description** ||
|| `read_buffer_size` | **Type**: `int`
**Default value**: `131072`
 ||
|| `max_redirect_count` | **Type**: `int`
**Default value**: `0`
 ||
|| `ignore_continue_responses` | **Type**: `bool`
**Default value**: `false`
 ||
|| `connection_idle_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `header_read_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `body_read_idle_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `write_idle_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `max_idle_connections` | **Type**: `int`
**Default value**: `0`
 ||
|| `dns_resolve_options` | **Type**: `std::optional<NYT::NDns::TDnsResolveOptions>`
 ||
|| `omit_question_mark_for_empty_query` | **Type**: `bool`
**Default value**: `false`
 ||
|| `dialer` | **Type**: `NYT::TIntrusivePtr<`[NYT::NNet::TDialerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NNet_TDialerConfig)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NHttp_TClientConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NHttps_TClientConfig.md -->
## NYT::NHttps::TClientConfig {#NYT_NHttps_TClientConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/https/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/https/config.h)

#|
|| **Parameter** | **Description** ||
|| `read_buffer_size` | **Type**: `int`
**Default value**: `131072`
 ||
|| `max_redirect_count` | **Type**: `int`
**Default value**: `0`
 ||
|| `ignore_continue_responses` | **Type**: `bool`
**Default value**: `false`
 ||
|| `connection_idle_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `header_read_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `body_read_idle_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `write_idle_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `max_idle_connections` | **Type**: `int`
**Default value**: `0`
 ||
|| `dns_resolve_options` | **Type**: `std::optional<NYT::NDns::TDnsResolveOptions>`
 ||
|| `omit_question_mark_for_empty_query` | **Type**: `bool`
**Default value**: `false`
 ||
|| `dialer` | **Type**: `NYT::TIntrusivePtr<`[NYT::NNet::TDialerConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NNet_TDialerConfig)`>`
**Default value**: `{}`
 ||
|| `credentials` | **Type**: `NYT::TIntrusivePtr<`[NYT::NHttps::TClientCredentialsConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NHttps_TClientCredentialsConfig)`>`
 ||
|| `allow_http` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NHttps_TClientConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NHttps_TClientCredentialsConfig.md -->
## NYT::NHttps::TClientCredentialsConfig {#NYT_NHttps_TClientCredentialsConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/https/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/https/config.h)

#|
|| **Parameter** | **Description** ||
|| `ca` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `cert_chain` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `private_key` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `ssl_configuration_commands` | **Type**: `std::vector<NYT::TIntrusivePtr<`[NYT::NCrypto::TSslContextCommand](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TSslContextCommand)`>>`
**Default value**: `[]`
 ||
|| `insecure_skip_verify` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NHttps_TClientCredentialsConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NLogging_ELogFamily.md -->
## NYT::NLogging::ELogFamily {#NYT_NLogging_ELogFamily}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `plain_text` |  ||
|| `structured` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NLogging_ELogFamily.md -->

<!-- source: en/flow/generated_docs/NYT_NLogging_ELogLevel.md -->
## NYT::NLogging::ELogLevel {#NYT_NLogging_ELogLevel}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `minimum` |  ||
|| `trace` |  ||
|| `debug` |  ||
|| `info` |  ||
|| `warning` |  ||
|| `error` |  ||
|| `alert` |  ||
|| `fatal` |  ||
|| `maximum` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NLogging_ELogLevel.md -->

<!-- source: en/flow/generated_docs/NYT_NLogging_TLogManagerConfig.md -->
## NYT::NLogging::TLogManagerConfig {#NYT_NLogging_TLogManagerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/logging/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/logging/config.h)

#|
|| **Parameter** | **Description** ||
|| `flush_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `watch_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `check_space_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `rotation_check_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `min_disk_space` | **Type**: `long`
**Default value**: `5368709120`
 ||
|| `high_backlog_watermark` | **Type**: `int`
**Default value**: `10000000`
 ||
|| `low_backlog_watermark` | **Type**: `int`
**Default value**: `1000000`
 ||
|| `shutdown_grace_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `shutdown_busy_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `0`
 ||
|| `rules` | **Type**: `std::vector<NYT::TIntrusivePtr<`[NYT::NLogging::TRuleConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_TRuleConfig)`>>`
**Required parameter**
 ||
|| `writers` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<NYT::NYTree::IMapNode>>`
**Required parameter**
 ||
|| `category_rate_limits` | **Type**: `THashMap<std::string, long>`
**Default value**: `{}`
 ||
|| `suppressed_messages` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
 ||
|| `message_level_overrides` | **Type**: `THashMap<std::string, `[NYT::NLogging::ELogLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_ELogLevel)`>`
**Default value**: `{}`
 ||
|| `request_suppression_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `0`
 ||
|| `enable_anchor_profiling` | **Type**: `bool`
**Default value**: `false`
 ||
|| `min_logged_message_rate_to_profile` | **Type**: `double`
**Default value**: `1.0`
 ||
|| `abort_on_alert` | **Type**: `bool`
**Default value**: `false`
 ||
|| `structured_validation_sampling_rate` | **Type**: `double`
**Default value**: `0.01`
 ||
|| `compression_thread_count` | **Type**: `int`
**Default value**: `1`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NLogging_TLogManagerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NLogging_TLogManagerDynamicConfig.md -->
## NYT::NLogging::TLogManagerDynamicConfig {#NYT_NLogging_TLogManagerDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/logging/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/logging/config.h)

#|
|| **Parameter** | **Description** ||
|| `min_disk_space` | **Type**: `std::optional<long>`
 ||
|| `high_backlog_watermark` | **Type**: `std::optional<int>`
 ||
|| `low_backlog_watermark` | **Type**: `std::optional<int>`
 ||
|| `rules` | **Type**: `std::optional<std::vector<NYT::TIntrusivePtr<`[NYT::NLogging::TRuleConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_TRuleConfig)`>>>`
 ||
|| `category_rate_limits` | **Type**: `std::optional<THashMap<std::string, long>>`
 ||
|| `suppressed_messages` | **Type**: `std::optional<std::vector<std::string>>`
 ||
|| `message_level_overrides` | **Type**: `THashMap<std::string, `[NYT::NLogging::ELogLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_ELogLevel)`>`
**Default value**: `{}`
 ||
|| `request_suppression_timeout` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `enable_anchor_profiling` | **Type**: `std::optional<bool>`
 ||
|| `min_logged_message_rate_to_profile` | **Type**: `std::optional<double>`
 ||
|| `abort_on_alert` | **Type**: `std::optional<bool>`
 ||
|| `structured_validation_sampling_rate` | **Type**: `std::optional<double>`
 ||
|| `compression_thread_count` | **Type**: `std::optional<int>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NLogging_TLogManagerDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NLogging_TRuleConfig.md -->
## NYT::NLogging::TRuleConfig {#NYT_NLogging_TRuleConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/logging/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/logging/config.h)

#|
|| **Parameter** | **Description** ||
|| `include_categories` | **Type**: `std::optional<THashSet<std::string>>`
 ||
|| `exclude_categories` | **Type**: `THashSet<std::string>`
**Default value**: `[]`
 ||
|| `min_level` | **Type**: [NYT::NLogging::ELogLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_ELogLevel)
**Default value**: `minimum`
 ||
|| `max_level` | **Type**: [NYT::NLogging::ELogLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_ELogLevel)
**Default value**: `maximum`
 ||
|| `family` | **Type**: `std::optional<`[NYT::NLogging::ELogFamily](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_ELogFamily)`>`
 ||
|| `writers` | **Type**: `std::vector<std::string>`
**Required parameter**
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NLogging_TRuleConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NNet_TAddressResolverConfig.md -->
## NYT::NNet::TAddressResolverConfig {#NYT_NNet_TAddressResolverConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/net/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/net/config.h)

#|
|| **Parameter** | **Description** ||
|| `shard_count` | **Type**: `unsigned long`
**Default value**: `1`
 ||
|| `expire_after_access_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `expire_after_successful_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `2m`
 ||
|| `expire_after_failed_update_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `refresh_time` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `60000`
 ||
|| `expiration_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
**Default value**: `60000`
 ||
|| `batch_update` | **Type**: `bool`
**Default value**: `false`
 ||
|| `retries` | **Type**: `int`
**Default value**: `25`
 ||
|| `retry_delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `200ms`
 ||
|| `resolve_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `max_resolve_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `warning_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `jitter` | **Type**: `std::optional<double>`
**Default value**: `0.5`
 ||
|| `force_tcp` | **Type**: `bool`
**Default value**: `false`
 ||
|| `keep_socket` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_ipv4` | **Type**: `bool`
**Default value**: `false`
 ||
|| `enable_ipv6` | **Type**: `bool`
**Default value**: `true`
 ||
|| `localhost_name_override` | **Type**: `std::optional<std::string>`
 ||
|| `resolve_hostname_into_fqdn` | **Type**: `bool`
**Default value**: `true`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NNet_TAddressResolverConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NNet_TDialerConfig.md -->
## NYT::NNet::TDialerConfig {#NYT_NNet_TDialerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/net/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/net/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable_no_delay` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_aggressive_reconnect` | **Type**: `bool`
**Default value**: `false`
 ||
|| `allow_bypass_tls` | **Type**: `bool`
**Default value**: `false`
 ||
|| `min_rto` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
 ||
|| `max_rto` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `rto_scale` | **Type**: `double`
**Default value**: `2.0`
 ||
|| `connect_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NNet_TDialerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NPipeIO_TPipeIODispatcherConfig.md -->
## NYT::NPipeIO::TPipeIODispatcherConfig {#NYT_NPipeIO_TPipeIODispatcherConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/pipe_io/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/pipe_io/config.h)

#|
|| **Parameter** | **Description** ||
|| `thread_pool_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10ms`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NPipeIO_TPipeIODispatcherConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NPipeIO_TPipeIODispatcherDynamicConfig.md -->
## NYT::NPipeIO::TPipeIODispatcherDynamicConfig {#NYT_NPipeIO_TPipeIODispatcherDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/pipe_io/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/pipe_io/config.h)

#|
|| **Parameter** | **Description** ||
|| `thread_pool_polling_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NPipeIO_TPipeIODispatcherDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NProfiling_ELabelSanitizationPolicy.md -->
## NYT::NProfiling::ELabelSanitizationPolicy {#NYT_NProfiling_ELabelSanitizationPolicy}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` |  ||
|| `weak` |  ||
|| `strong` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NProfiling_ELabelSanitizationPolicy.md -->

<!-- source: en/flow/generated_docs/NYT_NProfiling_TResourceTrackerConfig.md -->
## NYT::NProfiling::TResourceTrackerConfig {#NYT_NProfiling_TResourceTrackerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/profiling/resource_tracker/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/profiling/resource_tracker/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable` | **Type**: `bool`
**Default value**: `true`
 ||
|| `cpu_to_vcpu_factor` | **Type**: `std::optional<double>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NProfiling_TResourceTrackerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NProfiling_TShardConfig.md -->
## NYT::NProfiling::TShardConfig {#NYT_NProfiling_TShardConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/profiling/solomon/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/profiling/solomon/config.h)

#|
|| **Parameter** | **Description** ||
|| `filter` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
 ||
|| `grid_step` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `strip_sensors_name_prefix` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NProfiling_TShardConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NProfiling_TSolomonExporterConfig.md -->
## NYT::NProfiling::TSolomonExporterConfig {#NYT_NProfiling_TSolomonExporterConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/profiling/solomon/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/profiling/solomon/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable` | **Type**: `bool`
**Default value**: `true`
 ||
|| `grid_step` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `linger_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5m`
 ||
|| `window_size` | **Type**: `int`
**Default value**: `12`
 ||
|| `thread_pool_size` | **Type**: `int`
**Default value**: `1`
 ||
|| `encoding_thread_pool_size` | **Type**: `int`
**Default value**: `1`
 ||
|| `thread_pool_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10ms`
 ||
|| `encoding_thread_pool_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10ms`
 ||
|| `convert_counters_to_rate_for_solomon` | **Type**: `bool`
**Default value**: `true`
 ||
|| `rename_converted_counters` | **Type**: `bool`
**Default value**: `true`
 ||
|| `convert_counters_to_delta_gauge` | **Type**: `bool`
**Default value**: `false`
 ||
|| `enable_histogram_compat` | **Type**: `bool`
**Default value**: `false`
 ||
|| `split_rate_histogram_into_gauges` | **Type**: `bool`
**Default value**: `false`
 ||
|| `report_timestamps_for_rate_metrics` | **Type**: `bool`
**Default value**: `true`
 ||
|| `export_summary` | **Type**: `bool`
**Default value**: `false`
 ||
|| `export_summary_as_sum` | **Type**: `bool`
**Default value**: `false`
 ||
|| `export_summary_as_max` | **Type**: `bool`
**Default value**: `true`
 ||
|| `export_summary_as_min` | **Type**: `bool`
**Default value**: `false`
 ||
|| `export_summary_as_avg` | **Type**: `bool`
**Default value**: `false`
 ||
|| `mark_aggregates` | **Type**: `bool`
**Default value**: `true`
 ||
|| `enable_solomon_aggregates` | **Type**: `bool`
**Default value**: `false`
 ||
|| `export_globals_as_mem_only` | **Type**: `bool`
**Default value**: `false`
 ||
|| `strip_sensors_name_prefix` | **Type**: `bool`
**Default value**: `false`
 ||
|| `enable_self_profiling` | **Type**: `bool`
**Default value**: `true`
 ||
|| `report_build_info` | **Type**: `bool`
**Default value**: `true`
 ||
|| `report_kernel_version` | **Type**: `bool`
**Default value**: `true`
 ||
|| `report_restart` | **Type**: `bool`
**Default value**: `true`
 ||
|| `read_delay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `5s`
 ||
|| `host` | **Type**: `std::optional<std::string>`
 ||
|| `instance_tags` | **Type**: `THashMap<std::string, std::string>`
**Default value**: `{}`
 ||
|| `shards` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<`[NYT::NProfiling::TShardConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TShardConfig)`>>`
**Default value**: `{}`
 ||
|| `response_cache_ttl` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `2m`
 ||
|| `update_sensor_service_tree_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `30s`
 ||
|| `producer_collection_batch_size` | **Type**: `int`
**Default value**: `100`
 ||
|| `label_sanitization_policy` | **Type**: [NYT::NProfiling::ELabelSanitizationPolicy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_ELabelSanitizationPolicy)
**Default value**: `none`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NProfiling_TSolomonExporterConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NProfiling_TSolomonProxyConfig.md -->
## NYT::NProfiling::TSolomonProxyConfig {#NYT_NProfiling_TSolomonProxyConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/profiling/solomon/proxy.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/profiling/solomon/proxy.h)

#|
|| **Parameter** | **Description** ||
|| `public_component_names` | **Type**: `std::optional<THashSet<std::string>>`
 ||
|| `max_endpoints_per_request` | **Type**: `int`
**Default value**: `30`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NProfiling_TSolomonProxyConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NProfiling_TSolomonRegistryConfig.md -->
## NYT::NProfiling::TSolomonRegistryConfig {#NYT_NProfiling_TSolomonRegistryConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/profiling/solomon/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/profiling/solomon/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable_rseq` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NProfiling_TSolomonRegistryConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NProfiling_TSolomonRegistryDynamicConfig.md -->
## NYT::NProfiling::TSolomonRegistryDynamicConfig {#NYT_NProfiling_TSolomonRegistryDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/profiling/solomon/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/profiling/solomon/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable_rseq` | **Type**: `std::optional<bool>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NProfiling_TSolomonRegistryDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NQueryClient_EStatisticsAggregation.md -->
## NYT::NQueryClient::EStatisticsAggregation {#NYT_NQueryClient_EStatisticsAggregation}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` |  ||
|| `depth` |  ||
|| `depth_omit_node` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NQueryClient_EStatisticsAggregation.md -->

<!-- source: en/flow/generated_docs/NYT_NQueryClient_TCodegenCacheConfig.md -->
## NYT::NQueryClient::TCodegenCacheConfig {#NYT_NQueryClient_TCodegenCacheConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/query/engine_api/cg_cache.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/query/engine_api/cg_cache.h)

#|
|| **Parameter** | **Description** ||
|| `capacity` | **Type**: `long`
**Default value**: `512`
 ||
|| `younger_size_fraction` | **Type**: `double`
**Default value**: `0.25`
 ||
|| `shard_count` | **Type**: `int`
**Default value**: `1`
 ||
|| `touch_buffer_capacity` | **Type**: `int`
**Default value**: `65536`
 ||
|| `small_ghost_cache_ratio` | **Type**: `double`
**Default value**: `0.5`
 ||
|| `large_ghost_cache_ratio` | **Type**: `double`
**Default value**: `2.0`
 ||
|| `enable_ghost_caches` | **Type**: `bool`
**Default value**: `true`
 ||
|| `reject_oversized_items` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NQueryClient_TCodegenCacheConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NQueryClient_TCodegenCacheDynamicConfig.md -->
## NYT::NQueryClient::TCodegenCacheDynamicConfig {#NYT_NQueryClient_TCodegenCacheDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/query/engine_api/cg_cache.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/query/engine_api/cg_cache.h)

#|
|| **Parameter** | **Description** ||
|| `capacity` | **Type**: `std::optional<long>`
 ||
|| `younger_size_fraction` | **Type**: `std::optional<double>`
 ||
|| `enable_ghost_caches` | **Type**: `bool`
**Default value**: `true`
 ||
|| `reject_oversized_items` | **Type**: `std::optional<bool>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NQueryClient_TCodegenCacheDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NQueryClient_TQueryEngineConfig.md -->
## NYT::NQueryClient::TQueryEngineConfig {#NYT_NQueryClient_TQueryEngineConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/query/engine_api/query_engine_config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/query/engine_api/query_engine_config.h)

#|
|| **Parameter** | **Description** ||
|| `codegen_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NQueryClient::TCodegenCacheConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NQueryClient_TCodegenCacheConfig)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NQueryClient_TQueryEngineConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NQueryClient_TQueryEngineDynamicConfig.md -->
## NYT::NQueryClient::TQueryEngineDynamicConfig {#NYT_NQueryClient_TQueryEngineDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/query/engine_api/query_engine_config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/query/engine_api/query_engine_config.h)

#|
|| **Parameter** | **Description** ||
|| `codegen_cache` | **Type**: `NYT::TIntrusivePtr<`[NYT::NQueryClient::TCodegenCacheDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NQueryClient_TCodegenCacheDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `statistics_aggregation` | **Type**: `std::optional<`[NYT::NQueryClient::EStatisticsAggregation](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NQueryClient_EStatisticsAggregation)`>`
 ||
|| `use_order_by_in_join_subqueries` | **Type**: `std::optional<bool>`
 ||
|| `enable_parallelize_unordered_group_by` | **Type**: `std::optional<bool>`
 ||
|| `expression_builder_version` | **Type**: `std::optional<int>`
 ||
|| `max_projection_count` | **Type**: `int`
**Default value**: `1024`
 ||
|| `codegen_optimization_level` | **Type**: `std::optional<`[NYT::NCodegen::EOptimizationLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCodegen_EOptimizationLevel)`>`
 ||
|| `allow_udf_object_code_cache` | **Type**: `std::optional<bool>`
 ||
|| `rewrite_cardinality_into_hyper_log_log_with_precision` | **Type**: `std::optional<bool>`
 ||
|| `allow_join_with_async_last_committed_timestamp_if_require_sync_replica_is_false` | **Type**: `std::optional<bool>`
 ||
|| `truncated_query_length_for_tracing` | **Type**: `std::optional<int>`
 ||
|| `allow_reverse_scan_for_order_by` | **Type**: `std::optional<bool>`
 ||
|| `allow_heavy_range_inference_in_joins` | **Type**: `std::optional<bool>`
 ||
|| `prefetch_join_tables` | **Type**: `std::optional<bool>`
 ||
|| `allow_multiple_join_subqueries_for_non_lookup_joins` | **Type**: `std::optional<bool>`
 ||
|| `join_cache_size` | **Type**: `std::optional<long>`
 ||
|| `max_subsplits_per_tablet` | **Type**: `std::optional<int>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NQueryClient_TQueryEngineDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_EPeerPriorityStrategy.md -->
## NYT::NRpc::EPeerPriorityStrategy {#NYT_NRpc_EPeerPriorityStrategy}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `none` |  ||
|| `prefer_local` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_EPeerPriorityStrategy.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_ERequestTracingMode.md -->
## NYT::NRpc::ERequestTracingMode {#NYT_NRpc_ERequestTracingMode}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `enable` |  ||
|| `disable` |  ||
|| `force` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_ERequestTracingMode.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_NGrpc_TChannelConfig.md -->
## NYT::NRpc::NGrpc::TChannelConfig {#NYT_NRpc_NGrpc_TChannelConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/grpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/grpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `credentials` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::NGrpc::TChannelCredentialsConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_NGrpc_TChannelCredentialsConfig)`>`
 ||
|| `grpc_arguments` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<NYT::NYTree::INode>>`
**Default value**: `{}`
 ||
|| `address` | **Type**: `std::string`
**Default value**: `TString("")`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_NGrpc_TChannelConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_NGrpc_TChannelCredentialsConfig.md -->
## NYT::NRpc::NGrpc::TChannelCredentialsConfig {#NYT_NRpc_NGrpc_TChannelCredentialsConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/grpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/grpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `pem_root_certs` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `pem_key_cert_pair` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::NGrpc::TSslPemKeyCertPairConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_NGrpc_TSslPemKeyCertPairConfig)`>`
 ||
|| `verify_server_cert` | **Type**: `bool`
**Default value**: `true`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_NGrpc_TChannelCredentialsConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_NGrpc_TDispatcherConfig.md -->
## NYT::NRpc::NGrpc::TDispatcherConfig {#NYT_NRpc_NGrpc_TDispatcherConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/grpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/grpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `dispatcher_thread_count` | **Type**: `int`
**Default value**: `4`
 ||
|| `grpc_thread_count` | **Type**: `int`
**Default value**: `4`
 ||
|| `grpc_event_engine_thread_count` | **Type**: `int`
**Default value**: `4`
 ||
|| `grpc_internal_min_log_level` | **Type**: [NYT::NLogging::ELogLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_ELogLevel)
**Default value**: `error`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_NGrpc_TDispatcherConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_NGrpc_TDispatcherDynamicConfig.md -->
## NYT::NRpc::NGrpc::TDispatcherDynamicConfig {#NYT_NRpc_NGrpc_TDispatcherDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/grpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/grpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `grpc_internal_min_log_level` | **Type**: `std::optional<`[NYT::NLogging::ELogLevel](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_ELogLevel)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_NGrpc_TDispatcherDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_NGrpc_TSslPemKeyCertPairConfig.md -->
## NYT::NRpc::NGrpc::TSslPemKeyCertPairConfig {#NYT_NRpc_NGrpc_TSslPemKeyCertPairConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/grpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/grpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `private_key` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|| `cert_chain` | **Type**: `NYT::TIntrusivePtr<`[NYT::NCrypto::TPemBlobConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NCrypto_TPemBlobConfig)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_NGrpc_TSslPemKeyCertPairConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_TDispatcherConfig.md -->
## NYT::NRpc::TDispatcherConfig {#NYT_NRpc_TDispatcherConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `heavy_pool_size` | **Type**: `int`
**Default value**: `16`
 ||
|| `compression_pool_size` | **Type**: `int`
**Default value**: `8`
 ||
|| `heavy_pool_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10ms`
 ||
|| `default_request_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
 ||
|| `alert_on_missing_request_annotation` | **Type**: `bool`
**Default value**: `false`
 ||
|| `alert_on_unset_request_timeout` | **Type**: `bool`
**Default value**: `false`
 ||
|| `send_tracing_baggage` | **Type**: `bool`
**Default value**: `true`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_TDispatcherConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_TDispatcherDynamicConfig.md -->
## NYT::NRpc::TDispatcherDynamicConfig {#NYT_NRpc_TDispatcherDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `heavy_pool_size` | **Type**: `std::optional<int>`
 ||
|| `compression_pool_size` | **Type**: `std::optional<int>`
 ||
|| `heavy_pool_polling_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `alert_on_missing_request_annotation` | **Type**: `std::optional<bool>`
 ||
|| `send_tracing_baggage` | **Type**: `std::optional<bool>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_TDispatcherDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_TDynamicChannelPoolConfig.md -->
## NYT::NRpc::TDynamicChannelPoolConfig {#NYT_NRpc_TDynamicChannelPoolConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `discover_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `acknowledgement_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `rediscover_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `rediscover_splay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `hard_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `soft_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `max_peer_count` | **Type**: `int`
**Default value**: `100`
 ||
|| `hashes_per_peer` | **Type**: `int`
**Default value**: `10`
 ||
|| `min_peer_count_for_priority_awareness` | **Type**: `int`
**Default value**: `0`
 ||
|| `enable_power_of_two_choices_strategy` | **Type**: `bool`
**Default value**: `true`
 ||
|| `max_concurrent_discover_requests` | **Type**: `int`
**Default value**: `10`
 ||
|| `random_peer_eviction_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1s`
 ||
|| `enable_peer_polling` | **Type**: `bool`
**Default value**: `false`
 ||
|| `peer_polling_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `peer_polling_period_splay` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10s`
 ||
|| `peer_polling_request_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `peer_priority_strategy` | **Type**: [NYT::NRpc::EPeerPriorityStrategy](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_EPeerPriorityStrategy)
**Default value**: `none`
 ||
|| `discovery_session_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_TDynamicChannelPoolConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_THistogramExponentialBounds.md -->
## NYT::NRpc::THistogramExponentialBounds {#NYT_NRpc_THistogramExponentialBounds}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `min` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `0`
 ||
|| `max` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `2s`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_THistogramExponentialBounds.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_TRetryingChannelConfig.md -->
## NYT::NRpc::TRetryingChannelConfig {#NYT_NRpc_TRetryingChannelConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `retry_backoff_time` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `3s`
 ||
|| `retry_attempts` | **Type**: `int`
**Default value**: `10`
 ||
|| `enable_exponential_retry_backoffs` | **Type**: `bool`
**Default value**: `false`
 ||
|| `retry_backoff` | **Type**: `NYT::TExponentialBackoffOptions`
**Default value**:

```yson
{
    "backoff_jitter" = 0.1;
    "backoff_multiplier" = 1.5;
    "invocation_count" = 10;
    "max_backoff" = 5000;
    "min_backoff" = 1000;
}
```
 ||
|| `retry_timeout` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_TRetryingChannelConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_TServerConfig.md -->
## NYT::NRpc::TServerConfig {#NYT_NRpc_TServerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `enable_per_user_profiling` | **Type**: `bool`
**Default value**: `false`
 ||
|| `timing_histogram` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TTimeHistogramConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TTimeHistogramConfig)`>`
 ||
|| `enable_error_code_counter` | **Type**: `bool`
**Default value**: `false`
 ||
|| `tracing_mode` | **Type**: [NYT::NRpc::ERequestTracingMode](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_ERequestTracingMode)
**Default value**: `enable`
 ||
|| `services` | **Type**: `THashMap<std::string, NYT::TIntrusivePtr<NYT::NYTree::INode>>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_TServerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_TServiceDiscoveryEndpointsConfig.md -->
## NYT::NRpc::TServiceDiscoveryEndpointsConfig {#NYT_NRpc_TServiceDiscoveryEndpointsConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `cluster` | **Type**: `std::optional<std::string>`
 ||
|| `clusters` | **Type**: `std::vector<std::string>`
**Default value**: `[]`
 ||
|| `endpoint_set_id` | **Type**: `std::string`
**Required parameter**
 ||
|| `update_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1m`
 ||
|| `use_ipv4` | **Type**: `bool`
**Default value**: `false`
 ||
|| `use_ipv6` | **Type**: `bool`
**Default value**: `true`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_TServiceDiscoveryEndpointsConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NRpc_TTimeHistogramConfig.md -->
## NYT::NRpc::TTimeHistogramConfig {#NYT_NRpc_TTimeHistogramConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/rpc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/rpc/config.h)

#|
|| **Parameter** | **Description** ||
|| `exponential_bounds` | **Type**: `std::optional<NYT::TIntrusivePtr<`[NYT::NRpc::THistogramExponentialBounds](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_THistogramExponentialBounds)`>>`
 ||
|| `custom_bounds` | **Type**: `std::optional<std::vector<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NRpc_TTimeHistogramConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NTCMalloc_TDynamicHeapSizeLimitConfig.md -->
## NYT::NTCMalloc::TDynamicHeapSizeLimitConfig {#NYT_NTCMalloc_TDynamicHeapSizeLimitConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/tcmalloc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/tcmalloc/config.h)

#|
|| **Parameter** | **Description** ||
|| `container_memory_ratio` | **Type**: `std::optional<double>`
 ||
|| `container_memory_margin` | **Type**: `std::optional<long>`
 ||
|| `hard` | **Type**: `std::optional<bool>`
 ||
|| `dump_memory_profile_on_violation` | **Type**: `std::optional<bool>`
 ||
|| `memory_profile_dump_timeout` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `memory_profile_dump_path` | **Type**: `std::optional<std::string>`
 ||
|| `memory_profile_dump_filename_suffix` | **Type**: `std::optional<std::string>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NTCMalloc_TDynamicHeapSizeLimitConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NTCMalloc_TDynamicTCMallocConfig.md -->
## NYT::NTCMalloc::TDynamicTCMallocConfig {#NYT_NTCMalloc_TDynamicTCMallocConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/tcmalloc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/tcmalloc/config.h)

#|
|| **Parameter** | **Description** ||
|| `aggressive_release_threshold` | **Type**: `std::optional<long>`
 ||
|| `aggressive_release_threshold_ratio` | **Type**: `std::optional<double>`
 ||
|| `aggressive_release_size` | **Type**: `std::optional<long>`
 ||
|| `aggressive_release_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `guarded_sampling_rate` | **Type**: `std::optional<long>`
 ||
|| `profile_sampling_rate` | **Type**: `std::optional<long>`
 ||
|| `max_per_cpu_cache_size` | **Type**: `std::optional<long>`
 ||
|| `max_total_thread_cache_bytes` | **Type**: `std::optional<long>`
 ||
|| `background_release_rate` | **Type**: `std::optional<long>`
 ||
|| `heap_size_limit` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTCMalloc::TDynamicHeapSizeLimitConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTCMalloc_TDynamicHeapSizeLimitConfig)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NTCMalloc_TDynamicTCMallocConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NTCMalloc_THeapSizeLimitConfig.md -->
## NYT::NTCMalloc::THeapSizeLimitConfig {#NYT_NTCMalloc_THeapSizeLimitConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/tcmalloc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/tcmalloc/config.h)

#|
|| **Parameter** | **Description** ||
|| `container_memory_ratio` | **Type**: `std::optional<double>`
 ||
|| `container_memory_margin` | **Type**: `std::optional<long>`
 ||
|| `hard` | **Type**: `bool`
**Default value**: `false`
 ||
|| `dump_memory_profile_on_violation` | **Type**: `bool`
**Default value**: `false`
 ||
|| `memory_profile_dump_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `10m`
 ||
|| `memory_profile_dump_path` | **Type**: `std::optional<std::string>`
 ||
|| `memory_profile_dump_filename_suffix` | **Type**: `std::optional<std::string>`
 ||
|| `memory_profile_retention` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTCMalloc::TMemoryProfileRetentionConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTCMalloc_TMemoryProfileRetentionConfig)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NTCMalloc_THeapSizeLimitConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NTCMalloc_TMemoryProfileRetentionConfig.md -->
## NYT::NTCMalloc::TMemoryProfileRetentionConfig {#NYT_NTCMalloc_TMemoryProfileRetentionConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/tcmalloc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/tcmalloc/config.h)

#|
|| **Parameter** | **Description** ||
|| `max_dump_count` | **Type**: `std::optional<int>`
 ||
|| `max_dump_age` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|| `max_total_size` | **Type**: `std::optional<long>`
 ||
|| `max_orphan_age` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `1d`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NTCMalloc_TMemoryProfileRetentionConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NTCMalloc_TTCMallocConfig.md -->
## NYT::NTCMalloc::TTCMallocConfig {#NYT_NTCMalloc_TTCMallocConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/tcmalloc/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/tcmalloc/config.h)

#|
|| **Parameter** | **Description** ||
|| `aggressive_release_threshold` | **Type**: `long`
**Default value**: `21474836480`
 ||
|| `aggressive_release_threshold_ratio` | **Type**: `std::optional<double>`
 ||
|| `aggressive_release_size` | **Type**: `long`
**Default value**: `134217728`
 ||
|| `aggressive_release_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `100ms`
 ||
|| `guarded_sampling_rate` | **Type**: `std::optional<long>`
**Default value**: `134217728`
 ||
|| `profile_sampling_rate` | **Type**: `long`
**Default value**: `2097152`
 ||
|| `max_per_cpu_cache_size` | **Type**: `long`
**Default value**: `3145728`
 ||
|| `max_total_thread_cache_bytes` | **Type**: `long`
**Default value**: `25165824`
 ||
|| `background_release_rate` | **Type**: `long`
**Default value**: `33554432`
 ||
|| `fail_fast_on_oom` | **Type**: `bool`
**Default value**: `true`
 ||
|| `heap_size_limit` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTCMalloc::THeapSizeLimitConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTCMalloc_THeapSizeLimitConfig)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NTCMalloc_TTCMallocConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NTracing_TJaegerTracerConfig.md -->
## NYT::NTracing::TJaegerTracerConfig {#NYT_NTracing_TJaegerTracerConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/tracing/jaeger/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/tracing/jaeger/config.h)

#|
|| **Parameter** | **Description** ||
|| `collector_channel_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::NGrpc::TChannelConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_NGrpc_TChannelConfig)`>`
 ||
|| `flush_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `stop_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `rpc_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15s`
 ||
|| `queue_stall_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15m`
 ||
|| `max_request_size` | **Type**: `long`
**Default value**: `131072`
 ||
|| `max_batch_size` | **Type**: `long`
**Default value**: `128`
 ||
|| `max_memory` | **Type**: `long`
**Default value**: `1073741824`
 ||
|| `subsampling_rate` | **Type**: `std::optional<double>`
 ||
|| `reconnect_period` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `15m`
 ||
|| `endpoint_channel_timeout` | **Type**: [TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)
**Default value**: `2h`
 ||
|| `service_name` | **Type**: `std::optional<std::string>`
 ||
|| `process_tags` | **Type**: `THashMap<std::string, std::string>`
**Default value**: `{}`
 ||
|| `enable_pid_tag` | **Type**: `bool`
**Default value**: `false`
 ||
|| `test_drop_spans` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NTracing_TJaegerTracerConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NTracing_TJaegerTracerDynamicConfig.md -->
## NYT::NTracing::TJaegerTracerDynamicConfig {#NYT_NTracing_TJaegerTracerDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/library/tracing/jaeger/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/library/tracing/jaeger/config.h)

#|
|| **Parameter** | **Description** ||
|| `collector_channel` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::NGrpc::TChannelConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_NGrpc_TChannelConfig)`>`
 ||
|| `max_request_size` | **Type**: `std::optional<long>`
 ||
|| `max_memory` | **Type**: `std::optional<long>`
 ||
|| `subsampling_rate` | **Type**: `std::optional<double>`
 ||
|| `flush_period` | **Type**: `std::optional<`[TDuration](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#TDuration)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NTracing_TJaegerTracerDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NYTree_TSize.md -->
## NYT::NYTree::TSize {#NYT_NYTree_TSize}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
**Description**:
A wrapper type around int64 that extends its parsing from yson. It can be parsed from yson values of the following types:
* int64. The value is used as is.
* uint64. The value is used as is, but an exception is thrown if it exceeds the range of int64.
* string. The value is parsed from a string with support for multiplier suffixes.
    * `K`, `M`, `G`, `T`, `P`, `E` &mdash; suffixes corresponding to multipliers $1000$, $1000^2$, etc.
    * `Ki`, `Mi`, `Gi`, `Ti`, `Pi`, `Ei` &mdash; suffixes corresponding to multipliers $2^{10}$, $2^{20}$, etc.

    So `12M` is $12~000~000$, and `1Ki` is $1024$.
<!-- endsource: en/flow/generated_docs/NYT_NYTree_TSize.md -->

<!-- source: en/flow/generated_docs/NYT_NYson_EEnumYsonStorageType.md -->
## NYT::NYson::EEnumYsonStorageType {#NYT_NYson_EEnumYsonStorageType}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `string` |  ||
|| `int` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NYson_EEnumYsonStorageType.md -->

<!-- source: en/flow/generated_docs/NYT_NYson_EUtf8Check.md -->
## NYT::NYson::EUtf8Check {#NYT_NYson_EUtf8Check}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->

#|
|| Possible values | **Description** ||
|| `disable` |  ||
|| `log_on_fail` |  ||
|| `throw_on_fail` |  ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NYson_EUtf8Check.md -->

<!-- source: en/flow/generated_docs/NYT_NYson_TProtobufInteropConfig.md -->
## NYT::NYson::TProtobufInteropConfig {#NYT_NYson_TProtobufInteropConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/yson/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/yson/config.h)

#|
|| **Parameter** | **Description** ||
|| `default_enum_yson_storage_type` | **Type**: [NYT::NYson::EEnumYsonStorageType](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYson_EEnumYsonStorageType)
**Default value**: `string`
 ||
|| `utf8_check` | **Type**: [NYT::NYson::EUtf8Check](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYson_EUtf8Check)
**Default value**: `throw_on_fail`
 ||
|| `force_snake_case_names` | **Type**: `bool`
**Default value**: `false`
 ||
|| `force_enum_string_type` | **Type**: `bool`
**Default value**: `false`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NYson_TProtobufInteropConfig.md -->

<!-- source: en/flow/generated_docs/NYT_NYson_TProtobufInteropDynamicConfig.md -->
## NYT::NYson::TProtobufInteropDynamicConfig {#NYT_NYson_TProtobufInteropDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/yson/config.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/yson/config.h)

#|
|| **Parameter** | **Description** ||
|| `utf8_check` | **Type**: `std::optional<`[NYT::NYson::EUtf8Check](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYson_EUtf8Check)`>`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_NYson_TProtobufInteropDynamicConfig.md -->

<!-- source: en/flow/generated_docs/NYT_TSingletonsDynamicConfig.md -->
## NYT::TSingletonsDynamicConfig {#NYT_TSingletonsDynamicConfig}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
Source: [yt/yt/core/misc/configurable_singleton_def.h](https://github.com/ytsaurus/ytsaurus/tree/main/yt/yt/core/misc/configurable_singleton_def.h)

#|
|| **Parameter** | **Description** ||
|| `logging` | **Type**: `NYT::TIntrusivePtr<`[NYT::NLogging::TLogManagerDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NLogging_TLogManagerDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `grpc_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::NGrpc::TDispatcherDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_NGrpc_TDispatcherDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `jaeger` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTracing::TJaegerTracerDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTracing_TJaegerTracerDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `tcmalloc` | **Type**: `NYT::TIntrusivePtr<`[NYT::NTCMalloc::TDynamicTCMallocConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NTCMalloc_TDynamicTCMallocConfig)`>`
**Default value**: `{}`
 ||
|| `fiber_manager` | **Type**: `NYT::TIntrusivePtr<`[NYT::NConcurrency::TFiberManagerDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NConcurrency_TFiberManagerDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `pipe_io_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NPipeIO::TPipeIODispatcherDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NPipeIO_TPipeIODispatcherDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `tcp_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NBus::NTcp::TDispatcherDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NBus_NTcp_TDispatcherDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `solomon_registry` | **Type**: `NYT::TIntrusivePtr<`[NYT::NProfiling::TSolomonRegistryDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NProfiling_TSolomonRegistryDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `rpc_dispatcher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NRpc::TDispatcherDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NRpc_TDispatcherDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `error_backtrace_enricher` | **Type**: `NYT::TIntrusivePtr<`[NYT::NFlow::TBacktraceEnricherDynamicSpec](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NFlow_TBacktraceEnricherDynamicSpec)`>`
**Default value**: `{}`
 ||
|| `query_engine_config` | **Type**: `NYT::TIntrusivePtr<`[NYT::NQueryClient::TQueryEngineDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NQueryClient_TQueryEngineDynamicConfig)`>`
**Default value**: `{}`
 ||
|| `protobuf_interop` | **Type**: `NYT::TIntrusivePtr<`[NYT::NYson::TProtobufInteropDynamicConfig](https://ytsaurus.tech/docs/en/flow/generated_docs/all_yson_structs.md#NYT_NYson_TProtobufInteropDynamicConfig)`>`
**Default value**: `{}`
 ||
|#
<!-- endsource: en/flow/generated_docs/NYT_TSingletonsDynamicConfig.md -->

<!-- source: en/flow/generated_docs/TDuration.md -->
## TDuration {#TDuration}
<!-- This file is generated by yt/yt/flow/yandex/tools/generate_yson_struct_doc/generate.sh script -->
<!-- Before using doc generation tool check readme: yt/yt/flow/yandex/tools/generate_yson_struct_doc/README.md -->
**Description**:
A duration type representing a time interval. It can be parsed from yson values of the following types:
* uint64. Specifies the time in **milliseconds**.
* int64. Same as uint64. An exception is thrown if the value is negative.
* double. Same as int64. Behavior is undefined if the value falls outside the range of uint64.
* string. Specifies the time in formats: `10s`, `15ms`, `15.05s`, `20us`, `25`. If no suffix is specified, the number is interpreted as a time in **seconds**.
<!-- endsource: en/flow/generated_docs/TDuration.md -->