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https://issues.apache.org/jira/browse/SPARK-50892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17921683#comment-17921683
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Milan Cupac commented on SPARK-50892:
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The recursive CTE execution still needs more design discussion, so we decided
to re-target it to Spark 4.1
> Add UnionLoopExec, physical operator for recursion, to perform execution of
> recursive queries
> ---------------------------------------------------------------------------------------------
>
> Key: SPARK-50892
> URL: https://issues.apache.org/jira/browse/SPARK-50892
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Affects Versions: 4.1
> Reporter: Milan Cupac
> Priority: Major
> Labels: pull-request-available
>
> Introduce UnionLoopExec, physical operator for recursion: UnionLoop is
> converted to UnionLoopExec during execution.
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