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https://issues.apache.org/jira/browse/HIVE-6566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13922968#comment-13922968
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Gunther Hagleitner commented on HIVE-6566:
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.2 adds comments (per review request).
> Incorrect union-all plan with map-joins on Tez
> ----------------------------------------------
>
> Key: HIVE-6566
> URL: https://issues.apache.org/jira/browse/HIVE-6566
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.13.0
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Attachments: HIVE-6566.1.patch, HIVE-6566.2.patch
>
>
> The tez dag is hooked up incorrectly for some union all queries involving map
> joins.
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