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From "Gunther Hagleitner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2340) optimize orderby followed by a groupby
Date Fri, 08 Feb 2013 04:17:13 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574224#comment-13574224
] 

Gunther Hagleitner commented on HIVE-2340:
------------------------------------------

[~navis]: Disabling the join merge when auto.convert is on should work.

I ran unit tests for patch11 and for me these TestCliDriver tests are failing: auto_join13.q,auto_join26.q,infer_bucket_sort.q,join13.q,partition_wise_fileformat14.q

                
> optimize orderby followed by a groupby
> --------------------------------------
>
>                 Key: HIVE-2340
>                 URL: https://issues.apache.org/jira/browse/HIVE-2340
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Minor
>              Labels: perfomance
>         Attachments: ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.1.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.2.patch,
ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.3.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.4.patch,
ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.5.patch, HIVE-2340.1.patch.txt, HIVE-2340.D1209.10.patch,
HIVE-2340.D1209.11.patch, HIVE-2340.D1209.6.patch, HIVE-2340.D1209.7.patch, HIVE-2340.D1209.8.patch,
HIVE-2340.D1209.9.patch, testclidriver.txt
>
>
> Before implementing optimizer for JOIN-GBY, try to implement RS-GBY optimizer(cluster-by
following group-by).

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