Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22957#discussion_r238318256
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/exchange/EnsureRequirements.scala
---
@@ -145,9 +145,14 @@ case class EnsureRequirements(conf: SQLConf) extends
Rule[SparkPlan] {
assert(requiredChildDistributions.length == children.length)
assert(requiredChildOrderings.length == children.length)
+ val aliasMap =
AttributeMap[Expression](children.flatMap(_.expressions.collect {
--- End diff --
is it safe to do so? I think we should only collect aliases from operators
with a project list, i.e. `Project`, `Aggregate`, `Window`.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
