beliefer commented on code in PR #37001:
URL: https://github.com/apache/spark/pull/37001#discussion_r918480531
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2ScanRelationPushDown.scala:
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@@ -165,106 +169,63 @@ object V2ScanRelationPushDown extends Rule[LogicalPlan]
with PredicateHelper wit
val pushedAggregates =
finalTranslatedAggregates.filter(r.pushAggregation)
if (pushedAggregates.isEmpty) {
aggNode // return original plan node
+ } else if (r.supportCompletePushDown(pushedAggregates.get)) {
+ // If we can push down the aggregation completely, we need
to consider
+ // pushing down the Limit or Offset operator, so keep the
information about
+ // aggregation push down and push down aggregation later.
+ sHolder.pushedAggregation = Some(PushedAggregation(
+ pushedAggregates,
+ finalResultExpressions,
+ finalAggregates,
+ normalizedGroupingExpressions,
+ aggExprToOutputOrdinal))
+ sHolder
Review Comment:
Got it.
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