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Posted to dev@hive.apache.org by "Gunther Hagleitner (JIRA)" <ji...@apache.org> on 2013/03/15 00:20:13 UTC

[jira] [Updated] (HIVE-4179) NonBlockingOpDeDup does not merge SEL operators correctly

     [ https://issues.apache.org/jira/browse/HIVE-4179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gunther Hagleitner updated HIVE-4179:
-------------------------------------

    Attachment: HIVE-4179.1.patch

replaced standard backtracking with SEL merge function.
                
> 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
>         Attachments: HIVE-4179.1.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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