cloud-fan commented on a change in pull request #32932:
URL: https://github.com/apache/spark/pull/32932#discussion_r657606784
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/ShuffleExchangeExec.scala
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@@ -92,10 +92,17 @@ case object REPARTITION_BY_COL extends ShuffleOrigin
// a certain partition number. Spark can't optimize it.
case object REPARTITION_BY_NUM extends ShuffleOrigin
-// Indicates that the shuffle operator was added by the user-specified
repartition operator. Spark
-// firstly tries to coalesce partitions, if it cannot be coalesced, then use
the local shuffle
-// reader.
-case object REPARTITION_BY_NONE extends ShuffleOrigin
+// Indicates that the rebalance operator was added by the user-specified
repartition operator.
Review comment:
the shuffle operator was added by the user-specified rebalance operator.
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