Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/16120#discussion_r90996775
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
---
@@ -93,13 +93,13 @@ case class Generate(
override def producedAttributes: AttributeSet =
AttributeSet(generatorOutput)
- def output: Seq[Attribute] = {
- val qualified = qualifier.map(q =>
- // prepend the new qualifier to the existed one
- generatorOutput.map(a => a.withQualifier(Some(q)))
- ).getOrElse(generatorOutput)
+ val qualifiedGeneratorOutput: Seq[Attribute] = qualifier.map { q =>
--- End diff --
BTW, I did a scan in codes and I can't find anyplace to assign the
`qualifier` parameter for `Generate`. I only see using `None` for it.
@hvanhovell Do you know any place we have specified `qualifier` for a
`Generate`?
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