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https://issues.apache.org/jira/browse/SPARK-41261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-41261.
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Fix Version/s: 3.4.0
Resolution: Fixed
Issue resolved by pull request 38798
[https://github.com/apache/spark/pull/38798]
> applyInPandasWithState can produce incorrect key value in user function for
> timed out state
> -------------------------------------------------------------------------------------------
>
> Key: SPARK-41261
> URL: https://issues.apache.org/jira/browse/SPARK-41261
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 3.4.0
> Reporter: Jungtaek Lim
> Assignee: Jungtaek Lim
> Priority: Major
> Fix For: 3.4.0
>
>
> We observed the issue that user function retrieves incorrect key in user
> function for timed out state. After RCA we figured out this could happen when
> the columns of grouping keys are not placed sequentially at earliest place.
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