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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2206) add a new optimizer for query correlation discovery and optimization
Date Sat, 28 Jul 2012 10:38:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13424315#comment-13424315
] 

He Yongqiang commented on HIVE-2206:
------------------------------------

For the last few months (almost one year), Yin has been actively maintaining this patch, and
i think it is in a very good state to check into trunk. 

So i will do some final review, and hope to commit it sometime next month. Please feel free
to jump in to review the patch and put any comments here before the commit.

In the last review, I will make sure this patch will not have big changes to existing execution
path, so it can be simply disabled like other optimizations in Hive. And Yin will still be
actively maintaining this patch (help fix  bugs etc) after the commit. 
                
> add a new optimizer for query correlation discovery and optimization
> --------------------------------------------------------------------
>
>                 Key: HIVE-2206
>                 URL: https://issues.apache.org/jira/browse/HIVE-2206
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: He Yongqiang
>            Assignee: Yin Huai
>         Attachments: HIVE-2206.1.patch.txt, HIVE-2206.2.patch.txt, HIVE-2206.3.patch.txt,
HIVE-2206.4.patch.txt, HIVE-2206.5-1.patch.txt, HIVE-2206.5.patch.txt, HIVE-2206.6.patch.txt,
HIVE-2206.7.patch.txt, HIVE-2206.8-r1237253.patch.txt, HIVE-2206.8.r1224646.patch.txt, YSmartPatchForHive.patch,
testQueries.2.q
>
>
> reference:
> http://www.cse.ohio-state.edu/hpcs/WWW/HTML/publications/papers/TR-11-7.pdf

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