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https://issues.apache.org/jira/browse/HIVE-12313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Chauhan updated HIVE-12313:
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Attachment: HIVE-12313.patch
> Turn hive.optimize.union.remove on by default
> ---------------------------------------------
>
> Key: HIVE-12313
> URL: https://issues.apache.org/jira/browse/HIVE-12313
> Project: Hive
> Issue Type: Improvement
> Components: Logical Optimizer
> Affects Versions: 2.0.0
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Attachments: HIVE-12313.patch
>
>
> This optimization always helps. It should be on by default.
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