sunchao commented on a change in pull request #35657:
URL: https://github.com/apache/spark/pull/35657#discussion_r838908581
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/EnsureRequirements.scala
##########
@@ -137,8 +138,16 @@ case class EnsureRequirements(
Some(finalCandidateSpecs.values.maxBy(_.numPartitions))
}
+ // Check if 1) all children are of `KeyGroupedPartitioning` and 2) they
are all compatible
+ // with each other. If both are true, skip shuffle.
+ val allCompatible = childrenIndexes.sliding(2).map {
Review comment:
This is handled at the moment via config `spark.sql.shuffle.partitions`:
in `EnsureRequirements` if the number of partitions is smaller than this
number, Spark will insert shuffle.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
