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Posted to dev@hive.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2012/12/31 02:26:12 UTC
[jira] [Commented] (HIVE-2340) optimize orderby followed by a
groupby
[ https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13541214#comment-13541214 ]
Navis commented on HIVE-2340:
-----------------------------
@Ashutosh
I've abandoned working on this cause HIVE-2206 is superset of it. Would it be better to do this as a brief mending before that?
> 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
>
>
> Before implementing optimizer for JOIN-GBY, try to implement RS-GBY optimizer(cluster-by following group-by).
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