Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/11083#discussion_r52958555
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/WholeStageCodegen.scala
---
@@ -381,6 +381,9 @@ private[sql] case class
CollapseCodegenStages(sqlContext: SQLContext) extends Ru
// the generated code will be huge if there are too many columns
val haveManyColumns = plan.output.length > 200
!willFallback && !haveManyColumns
+ // Collapse a broadcast into the stage - it should not contain any
code that can be
+ // codegenerated.
+ case _: Broadcast => true
--- End diff --
This is also not needed.
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