cloud-fan commented on code in PR #39049:
URL: https://github.com/apache/spark/pull/39049#discussion_r1051840699
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/InjectRuntimeFilter.scala:
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@@ -99,16 +99,17 @@ object InjectRuntimeFilter extends Rule[LogicalPlan] with
PredicateHelper with J
filterCreationSideExp: Expression,
filterCreationSidePlan: LogicalPlan): LogicalPlan = {
require(filterApplicationSideExp.dataType ==
filterCreationSideExp.dataType)
- val actualFilterKeyExpr = mayWrapWithHash(filterCreationSideExp)
- val alias = Alias(actualFilterKeyExpr, actualFilterKeyExpr.toString)()
+ val alias = Alias(filterCreationSideExp, filterCreationSideExp.toString)()
val aggregate = ColumnPruning(Aggregate(Seq(alias), Seq(alias),
filterCreationSidePlan))
Review Comment:
I don't get it. How is `Project(expr, Agg(...))` different from
`Agg(grouping, expr)`? `Agg` has a project list and can do the job of `Project`
as well.
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