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https://issues.apache.org/jira/browse/HIVE-4179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13620483#comment-13620483
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Navis commented on HIVE-4179:
-----------------------------
I know results of 5,8,9,14,24 would be fixed by other issues. But IMHO, those
changes should be included anyway. Isn't it? And, sorry for slow progress. I'm
barely not good reviewer but trying to be like a committer.
> NonBlockingOpDeDup does not merge SEL operators correctly
> ---------------------------------------------------------
>
> Key: HIVE-4179
> URL: https://issues.apache.org/jira/browse/HIVE-4179
> Project: Hive
> Issue Type: Bug
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Priority: Critical
> Fix For: 0.11.0
>
> Attachments: HIVE-4179.1.patch, HIVE-4179.2.patch, HIVE-4179.3.patch,
> HIVE-4179.4.patch
>
>
> The input columns list for SEL operations isn't merged properly in the
> optimization. The best way to see this is running union_remove_22.q with
> -Dhadoop.mr.rev=23. The plan shows lost UDFs and a broken lineage for one
> column.
> Note: union_remove tests do not run on hadoop 1 or 0.20.
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