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From "Mark Grover (JIRA)" <>
Subject [jira] [Commented] (HIVE-3647) map-side groupby wrongly due to HIVE-3432
Date Fri, 09 Nov 2012 07:08:12 GMT


Mark Grover commented on HIVE-3647:

Made a comment on Phabricator. I didn't go through the whole review but I will do that once
I hear your thoughts on the comment.
> map-side groupby wrongly due to HIVE-3432
> -----------------------------------------
>                 Key: HIVE-3647
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: hive.3647.1.patch, hive.3647.2.patch, hive.3647.3.patch, hive.3647.4.patch,
> 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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