Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/10391#discussion_r48501635
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects.scala
---
@@ -439,6 +439,13 @@ case class MapObjects(
s"boolean ${loopVar.isNull} = ${genInputData.isNull} ||
${loopVar.value} == null;"
}
+ // If lambdaFunction is WrapOption, we will not determine null or not
based on the
+ // value of loopVar.isNull, because WrapOption will return None for
null.
+ val isWrapOption = lambdaFunction match {
--- End diff --
I'm not sure exactly what is going on here, but this looks like a hack.
Ideally this node should not need to know what type its child is to operate
correctly.
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