Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18121#discussion_r118730743
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/Exchange.scala
---
@@ -58,6 +59,10 @@ case class ReusedExchangeExec(override val output:
Seq[Attribute], child: Exchan
override protected[sql] def doExecuteBroadcast[T]():
broadcast.Broadcast[T] = {
child.executeBroadcast()
}
+
+ override def outputPartitioning: Partitioning = child.outputPartitioning
--- End diff --
`ReusedExchangeExec` can have distinct sets of output attribute ids. Shall
we also update `outputPartitioning` and `outputOrdering`, if its output is
different to `child.output`.
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