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https://issues.apache.org/jira/browse/SPARK-60634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-60634:
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Labels: pull-request-available (was: )
> Give copied UUID expressions independent random generators
> ----------------------------------------------------------
>
> Key: SPARK-60634
> URL: https://issues.apache.org/jira/browse/SPARK-60634
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Linhong Liu
> Priority: Major
> Labels: pull-request-available
>
> Uuid is marked stateful, but it inherits the leaf-expression copy hook that
> returns the same instance. freshCopyIfContainsStatefulExpression therefore
> shares its mutable random generator between evaluators. Advancing or
> reinitializing one evaluator changes the sequence observed by another. The
> leaf copy hook should construct a new Uuid with the same seed. Regression
> coverage should verify distinct expressions, independent sequences, and
> isolated partition reinitialization.
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