JkSelf commented on a change in pull request #29021:
URL: https://github.com/apache/spark/pull/29021#discussion_r456272490



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/physical/partitioning.scala
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@@ -340,3 +340,28 @@ case class BroadcastPartitioning(mode: BroadcastMode) 
extends Partitioning {
     case _ => false
   }
 }
+
+/**

Review comment:
       Why we need to add a new `Partitioning ` ?




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