cloud-fan commented on a change in pull request #27742: [SPARK-30991] Refactor
AQE readers and RDDs
URL: https://github.com/apache/spark/pull/27742#discussion_r386208119
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/ReduceNumShufflePartitions.scala
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@@ -36,16 +36,15 @@ case class ReduceNumShufflePartitions(conf: SQLConf)
extends Rule[SparkPlan] {
if (!conf.reducePostShufflePartitionsEnabled) {
return plan
}
- if (!plan.collectLeaves().forall(_.isInstanceOf[QueryStageExec])) {
+ if (!plan.collectLeaves().forall(_.isInstanceOf[QueryStageExec])
+ || plan.find(_.isInstanceOf[CustomShuffleReaderExec]).isDefined) {
Review comment:
It was written this way as it needs to coalesce the shuffles partitions for
non-skew partitions. But it's not a problem now.
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