cloud-fan commented on a change in pull request #35130:
URL: https://github.com/apache/spark/pull/35130#discussion_r780294560
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2ScanRelationPushDown.scala
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@@ -212,7 +224,10 @@ object V2ScanRelationPushDown extends Rule[LogicalPlan]
with PredicateHelper {
private def supportPartialAggPushDown(agg: Aggregation): Boolean = {
// We don't know the agg buffer of `GeneralAggregateFunc`, so can't do
partial agg push down.
- agg.aggregateExpressions().forall(!_.isInstanceOf[GeneralAggregateFunc])
+ agg.aggregateExpressions().forall { aggregateFunc =>
+ !aggregateFunc.isInstanceOf[GeneralAggregateFunc] ||
+ aggregateFunc.asInstanceOf[GeneralAggregateFunc].name() == "AVG"
Review comment:
If `AVG` can be partially pushed, I'd like to create a dedicated class
for it, instead of using `GeneralAggregateFunc`.
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