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Posted to issues@hive.apache.org by "Runkang He (Jira)" <ji...@apache.org> on 2022/10/18 07:46:00 UTC

[jira] [Commented] (HIVE-2416) Multiple distinct function to support hive.groupby.skewindata optimization

    [ https://issues.apache.org/jira/browse/HIVE-2416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17619312#comment-17619312 ] 

Runkang He commented on HIVE-2416:
----------------------------------

Is this fixed in current hive version?

> 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
>            Priority: Major
>         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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