dongjoon-hyun commented on a change in pull request #33099:
URL: https://github.com/apache/spark/pull/33099#discussion_r659259391



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
##########
@@ -1373,16 +1373,18 @@ object RepartitionByExpression {
  */
 case class RebalancePartitions(
     partitionExpressions: Seq[Expression],
-    child: LogicalPlan) extends UnaryNode {
-  override def maxRows: Option[Long] = child.maxRows
-  override def output: Seq[Attribute] = child.output
+    child: LogicalPlan) extends RepartitionOperation {

Review comment:
       This looks like a nice refactoring in order to make consistent and 
simplify.




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