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https://issues.apache.org/jira/browse/HIVE-15588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15819600#comment-15819600
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Sergey Shelukhin commented on HIVE-15588:
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Is there RB?
> Vectorization: Defer deallocation of scratch columns in complex
> VectorExpressions like VectorUDFAdaptor, VectorUDFCoalesce, etc to prevent
> wrong reuse
> ------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-15588
> URL: https://issues.apache.org/jira/browse/HIVE-15588
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-15588.01.patch
>
>
> Make sure we don't deallocate a scratch column too quickly and cause result
> corruption due to scratch column reuse.
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