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https://issues.apache.org/jira/browse/SPARK-52609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17986769#comment-17986769
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Konjac commented on SPARK-52609:
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any information for repro?
> Make sure row sorter from each task won't be overwritten by other tasks
> -----------------------------------------------------------------------
>
> Key: SPARK-52609
> URL: https://issues.apache.org/jira/browse/SPARK-52609
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: L. C. Hsieh
> Priority: Major
>
> By working some POCs, we found that indeterministically strange errors
> happened, like SIGSEV, from the external sorter class. We figured that the
> usage of it in SortExec is not thread-safe.
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