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