maropu commented on a change in pull request #32494:
URL: https://github.com/apache/spark/pull/32494#discussion_r630726896
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/statsEstimation/UnionEstimation.scala
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@@ -103,10 +112,11 @@ object UnionEstimation {
}
(min, max)
}
- val newStat = ColumnStat(min = minMaxValue._1, max = minMaxValue._2)
+ val newStat = ColumnStat(min = minMaxValue._1, max = minMaxValue._2,
+ nullCount = nullCount)
outputAttrStats += unionOutput(outputIndex) -> newStat
}
- AttributeMap(outputAttrStats.toSeq)
+ AttributeMap(outputAttrStats)
Review comment:
`.toSeq` is needed for `newer` Scala compilers?
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