Write options

sorted_by

A sort using a column prefix:

df.write.sorted_by("uuid").yt("//sys/spark/examples/test_data")

Uniqueness of a key in a table:

df.write.sorted_by("uuid").unique_keys.yt("//sys/spark/examples/test_data")

A table may be stored in row (lookup) or column (scan) format. The preferred format is selected based on the task:

spark.write.optimize_for("scan").yt("//sys/spark/examples/test_data")
spark.write.optimize_for("lookup").yt("//sys/spark/examples/test_data")