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https://issues.apache.org/jira/browse/SPARK-56921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hans-Martin Keller updated SPARK-56921:
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Labels: (was: pull-request-available)
> Optimizer failure: NormalizeCTEIds brakes CTE references for queries with
> nested CTEs
> -------------------------------------------------------------------------------------
>
> Key: SPARK-56921
> URL: https://issues.apache.org/jira/browse/SPARK-56921
> Project: Spark
> Issue Type: Bug
> Components: Optimizer
> Affects Versions: 4.2.0, 4.1.1
> Environment: Tested with Java API (JUnit test), but also crashed on
> Claudera cluster.
> Reporter: Hans-Martin Keller
> Priority: Major
>
> Optimizer crashs in InlineCTE or other rule due to a broken CTERelationRefs.
> This only happens for plans with nested WithCTE nodes. The broken CTE
> relation is introduced by NormalizeCTEIds.
> A simple test case is described in
> https://github.com/apache/spark/issues/55799.
> In short, you have to execute a SQL query with CTE and define the result as
> temp view. Then use this temp view in different SQL queries and union the
> result. Any operation on the union will fail.
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