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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2340) optimize orderby followed by a groupby
Date Mon, 22 Apr 2013 08:59:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637847#comment-13637847
] 

Phabricator commented on HIVE-2340:
-----------------------------------

njain has commented on the revision "HIVE-2340 [jira] optimize orderby followed by a groupby".

INLINE COMMENTS
  ql/src/test/queries/clientpositive/reduce_deduplicate_extended.q:5 can you add some comments
in this test ???

  RS + GBY + RS is optimized to remove the last RS etc.
  before the case

REVISION DETAIL
  https://reviews.facebook.net/D1209

BRANCH
  DPAL-592

ARCANIST PROJECT
  hive

To: JIRA, hagleitn, navis
Cc: hagleitn, njain

                
> 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
>             Fix For: 0.11.0
>
>         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-2340.12.patch, HIVE-2340.13.patch,
HIVE-2340.14.patch, HIVE-2340.14.rebased_and_schema_clone.patch, HIVE-2340.15.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.D1209.14.patch, HIVE-2340.D1209.15.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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