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https://issues.apache.org/jira/browse/HIVE-4179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13620695#comment-13620695
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Gunther Hagleitner commented on HIVE-4179:
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I've split the golden file updates to go along with the code changes in the
patches. I prefer it this way, but will change if it makes things easier. This
is a somewhat special case I think, because the hadoop 2 build is already
broken (so even though this fixes some tests others will still fail).
> 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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