maryannxue commented on a change in pull request #29134:
URL: https://github.com/apache/spark/pull/29134#discussion_r456199456
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/AdaptiveSparkPlanExec.scala
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@@ -374,12 +374,14 @@ case class AdaptiveSparkPlanExec(
}
private def newQueryStage(e: Exchange): QueryStageExec = {
- val optimizedPlan = applyPhysicalRules(e.child, queryStageOptimizerRules)
+ // apply optimizer rules to the Exchange node and its children, allowing
plugins to be
+ // able to replace the Exchange node itself
+ val optimizedPlan = applyPhysicalRules(e, queryStageOptimizerRules)
Review comment:
How can we guarantee the top node is still an Exchange after applying
physical rules?
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