cloud-fan commented on a change in pull request #33286:
URL: https://github.com/apache/spark/pull/33286#discussion_r670962058
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/Statistics.scala
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@@ -119,6 +120,18 @@ case class ColumnStat(
maxLen = maxLen,
histogram = histogram,
version = version)
+
+ def updateCountStats(
+ oldNumRows: BigInt,
+ newNumRows: BigInt,
+ updatedColumnStatOpt: Option[ColumnStat] = None): ColumnStat = {
Review comment:
this parameter looks a bit weird, I'd expect the caller side to do
`updatedMap.get(attr.exprId).map(_._2).getOrElse(oriColStat).updateStates(oldNumRows,
newNumRows)`
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