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From "Gunther Hagleitner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4179) NonBlockingOpDeDup does not merge SEL operators correctly
Date Tue, 02 Apr 2013 08:01:21 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619607#comment-13619607
] 

Gunther Hagleitner commented on HIVE-4179:
------------------------------------------

[~navis]: Here's what you should see with this patch:

{noformat}
failures before: 10, 12, 13, 14, 22, 23, 24, 3, 4, 5, 7, 8, 9
 failures after: 10, 12, 13, 14,         24,       5,    8, 9
{noformat}

So, this patch fixes: 22, 23, 2, 3 and 7

Is that what you're asking?
                
> 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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