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From "Gunther Hagleitner (JIRA)" <>
Subject [jira] [Commented] (HIVE-2340) optimize orderby followed by a groupby
Date Mon, 04 Mar 2013 05:13:13 GMT


Gunther Hagleitner commented on HIVE-2340:

[~navis]: I've tried the latest patch (.13) and it doesn't apply cleanly anymore. I rebased
it, but after doing so I got an NPE from auto_join19.q. Something must have changed in the

I was however able to get the previous version of the patch to apply and work with just a
minor change. Tests pass for me on that one. I'll upload, in case you want to take a look.
Feel free to ignore.
> optimize orderby followed by a groupby
> --------------------------------------
>                 Key: HIVE-2340
>                 URL:
>             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.D1209.5.patch, HIVE-2340.12.patch, HIVE-2340.13.patch,
HIVE-2340.14.patch, HIVE-2340.1.patch.txt, HIVE-2340.D1209.10.patch, HIVE-2340.D1209.11.patch,
HIVE-2340.D1209.12.patch, HIVE-2340.D1209.13.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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