beliefer commented on code in PR #38745:
URL: https://github.com/apache/spark/pull/38745#discussion_r1031206732
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sql/core/src/main/scala/org/apache/spark/sql/execution/window/WindowExec.scala:
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@@ -87,7 +88,8 @@ case class WindowExec(
windowExpression: Seq[NamedExpression],
partitionSpec: Seq[Expression],
orderSpec: Seq[SortOrder],
- child: SparkPlan)
+ child: SparkPlan,
+ groupLimitInfo: Option[(Int, Expression)] = None)
Review Comment:
I think it is OK to add a physical node, but the amount of code is a little
large, and the filtering and reduction of data occur a little late.
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