peter-toth commented on a change in pull request #23731: [SPARK-26572][SQL] fix
aggregate codegen result evaluation
URL: https://github.com/apache/spark/pull/23731#discussion_r253519286
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/HashAggregateExec.scala
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@@ -466,10 +466,12 @@ case class HashAggregateExec(
val resultVars = bindReferences[Expression](
resultExpressions,
inputAttrs).map(_.genCode(ctx))
+ val evaluateResultVars = evaluateVariables(resultVars)
s"""
$evaluateKeyVars
$evaluateBufferVars
$evaluateAggResults
+ $evaluateResultVars
Review comment:
I think so. If you replace `.distinct()` to `.groupBy("idx").max()` in the
example then this code path runs and the change fixes the same issue.
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