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From "Namit Jain (JIRA)" <>
Subject [jira] [Updated] (HIVE-3647) map-side groupby wrongly due to HIVE-3432
Date Sat, 03 Nov 2012 05:36:12 GMT


Namit Jain updated HIVE-3647:

    Status: Patch Available  (was: Open)

Agree with you completely, Kevin.

Had not done a submit patch, since I wanted to run all the tests first.
> 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
> 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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