maropu commented on a change in pull request #27342: [SPARK-30620][SQL] avoid
unnecessary serialization in AggregateExpression
URL: https://github.com/apache/spark/pull/27342#discussion_r370092344
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/interfaces.scala
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@@ -96,6 +96,7 @@ case class AggregateExpression(
extends Expression
with Unevaluable {
+ @transient
lazy val resultAttribute: Attribute = if (aggregateFunction.resolved) {
Review comment:
Oh, I checked this method is called inside the planning phase (`AggUtils`
and `PhysicalAggregation`) only, so this fix looks reasonable.
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