Environment variables in YTsaurus Flow (Java)

The Java companion supports a set of environment variables to control the application and JVM behavior. You need to set the environment variables for the worker process.

General variables

Variable	Description	Default
`YT_FLOW_COMPANION_JOB_TTL`	TTL for the Job cache, format {number}{unit}.	`10m`

Variables for diagnostics and JVM

For more details about default JVM options, profiling, and configuration, see the section Java companion profiling.

Variable	Description	Default
`YT_FLOW_COMPANION_LOG_DIR`	Directory for companion logs and JVM diagnostic files.	`./logs`
`YT_FLOW_COMPANION_JFR_DISABLED`	If set to `1`, disables Java Flight Recorder options.	JFR is enabled
`YT_FLOW_COMPANION_JFR_OPTS`	Custom JFR options separated by a space, replacing the default values. Ignored if `YT_FLOW_COMPANION_JFR_DISABLED` is set.	see profiling
`YT_FLOW_COMPANION_GC_LOG_DISABLED`	If set to `1`, disables GC logging.	GC logging is enabled
`YT_FLOW_COMPANION_GC_LOG_OPTS`	Custom GC logging options separated by a space, replacing the default values. Ignored if `YT_FLOW_COMPANION_GC_LOG_DISABLED` is set.	see profiling
`YT_FLOW_COMPANION_JVM_EXTRA_OPTS`	Additional JVM options added after all default options.	—

Profiling

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