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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2012/11/01 07:51:13 UTC

[jira] [Commented] (HIVE-3647) map-side groupby wrongly due to HIVE-3432

    [ https://issues.apache.org/jira/browse/HIVE-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488510#comment-13488510 ] 

Namit Jain commented on HIVE-3647:
----------------------------------

https://reviews.facebook.net/D6369
                
> map-side groupby wrongly due to HIVE-3432
> -----------------------------------------
>
>                 Key: HIVE-3647
>                 URL: https://issues.apache.org/jira/browse/HIVE-3647
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>
> There seems to be a bug due to HIVE-3432.
> We are converting the group by to a map side group by after only looking at
> sorting columns. This can give wrong results if the data is sorted and
> bucketed by different columns.
> Add some tests for that scenario, verify and fix any issues.

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