[GitHub] [spark] wankunde commented on a diff in pull request #38176: [SPARK-40715][SQL] Support selecting shuffled hash join thought LocalMapThreshold is less than advisory partition size

[GitBox <gi...@apache.org>]

wankunde commented on code in PR #38176:
URL: https://github.com/apache/spark/pull/38176#discussion_r996650693


##########
sql/core/src/main/scala/org/apache/spark/sql/execution/adaptive/DynamicJoinSelection.scala:
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@@ -89,13 +111,19 @@ object DynamicJoinSelection extends Rule[LogicalPlan] with JoinSelectionHelper {
           false
         }
 
-        val preferShuffleHash = preferShuffledHashJoin(stage.mapStats.get)
+        val preferShuffleHash = streamedPlan match {
+          case LogicalQueryStage(_, streamedStage: ShuffleQueryStageExec)
+            if streamedStage.isMaterialized && streamedStage.mapStats.isDefined =>
+            preferShuffledHashJoin(stage.mapStats.get, streamedStage.mapStats.get)
+
+          case _ => false

Review Comment:
   Fix, could you help to review this PR again? 
   
   Thanks 



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