dongjoon-hyun commented on a change in pull request #31026:
URL: https://github.com/apache/spark/pull/31026#discussion_r552396430
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
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@@ -2150,9 +2150,6 @@ class Analyzer(override val catalogManager:
CatalogManager)
lead.copy(ignoreNulls = ignoreNulls)
case lag: Lag =>
lag.copy(ignoreNulls = ignoreNulls)
- case _ =>
- throw
QueryCompilationErrors.functionWithUnsupportedSyntaxError(
- owf.prettyName, "IGNORE NULLS")
Review comment:
Scala compiler intelligently understands `sealed` semantics. That is a
compilation failure in Scala 2.13.
> For example, we could implement some new expression that implements
FrameLessOffsetWindowFunction later, and we forgot to fix it here.
If you see the PR description of #30455 , I wrote like the following. Since
we upgrade to Scala 2.13.4, we are safe unless the committer ignores GitHub
Action job.
> Fix exhaustivity issues in both Scala 2.12/2.13 (Scala 2.13.4 requires
this for compilation.)
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