Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/20831#discussion_r176274536 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/columnar/InMemoryTableScanExec.scala --- @@ -169,7 +174,10 @@ case class InMemoryTableScanExec( override def outputOrdering: Seq[SortOrder] = relation.child.outputOrdering.map(updateAttribute(_).asInstanceOf[SortOrder]) - private def statsFor(a: Attribute) = relation.partitionStatistics.forAttribute(a) + // When we make canonicalized plan, we can't find a normalized attribute in this map. + // We return a `ColumnStatisticsSchema` for normalized attribute in this case. --- End diff -- Yes. I think so.
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