cloud-fan commented on a change in pull request #27253: [SPARK-30524] [SQL]
follow up SPARK-30524 to resolve comments
URL: https://github.com/apache/spark/pull/27253#discussion_r367810008
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/OptimizeSkewedJoin.scala
##########
@@ -223,7 +204,7 @@ case class OptimizeSkewedJoin(conf: SQLConf) extends
Rule[SparkPlan] {
shuffleStage.id == right.id =>
PartialShuffleReaderExec(shuffleStage, skewedPartitions.toSet)
}
- subJoins += optimizedSmj
+ subJoins +=
optimizedSmj.asInstanceOf[SortMergeJoinExec].copy(partialSMJ = Some(true))
Review comment:
the SMJ may not be the root node. Now I think it's better to match SMJ in
the plan transformation above.
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