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https://issues.apache.org/jira/browse/HIVE-18529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16343776#comment-16343776
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Matt McCline commented on HIVE-18529:
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+1 LGTM
> Vectorization: Add a debug config option to disable scratch column reuse
> ------------------------------------------------------------------------
>
> Key: HIVE-18529
> URL: https://issues.apache.org/jira/browse/HIVE-18529
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Affects Versions: 3.0.0, 2.3.2
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Major
> Attachments: HIVE-18529-branch-2.patch, HIVE-18529.1.patch,
> HIVE-18529.2.patch
>
>
> Debugging scratch column reuse is particularly painful and slow, adding a
> config allows for this to be done without rebuilds.
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