sigmod commented on a change in pull request #32742:
URL: https://github.com/apache/spark/pull/32742#discussion_r644555757
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/AdaptiveSparkPlanExec.scala
##########
@@ -603,6 +603,19 @@ case class AdaptiveSparkPlanExec(
(newPlan, optimized)
}
+ /**
+ * Clean up logical plan stats before re-optimize
+ */
+ private def cleanupStats(logicalPlan: LogicalPlan): Unit = {
+ logicalPlan.invalidateStatsCache()
+ // We must invalidate ineffective rules before re-optimize since AQE
Optimizer may introduce
+ // LocalRelation that can affect result.
Review comment:
Why do we need to invalidate ineffective rules? If AQE Optimizer
rewrote a leaf node to `LocalRelation`, the path from the new `LocalRelation`
to the new root only contains *new* TreeNode instances, in which ineffective
rule bits are not set.
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