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From "Namit Jain (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2416) Multiple distinct function to support hive.groupby.skewindata optimization
Date Mon, 24 Oct 2011 20:26:32 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13134447#comment-13134447
] 

Namit Jain commented on HIVE-2416:
----------------------------------

Can you update the patch ?
                
> Multiple distinct function to support hive.groupby.skewindata optimization
> --------------------------------------------------------------------------
>
>                 Key: HIVE-2416
>                 URL: https://issues.apache.org/jira/browse/HIVE-2416
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Ted Xu
>            Assignee: Ted Xu
>         Attachments: multi_distinct_skew.patch
>
>
> Currently when multiple distinct function is used, hive.groupby.skewindata optimization
parameter shall be set false, or else an exception is raised:
> {code}
> Error in semantic analysis: DISTINCT on different columns not supported with skew in
data
> {code}
> Skew groupby should support multiple distinct function

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