Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21054#discussion_r185170552
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Average.scala
---
@@ -62,14 +52,6 @@ case class Average(child: Expression) extends
DeclarativeAggregate with Implicit
/* count = */ Literal(0L)
)
- override lazy val updateExpressions = Seq(
--- End diff --
Is it okay to remain as `override lazy val updateExpressions =
updateExpressionsDef` as the same as other abstract classes?
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