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https://issues.apache.org/jira/browse/HIVE-2206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457114#comment-13457114
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Yin Huai commented on HIVE-2206:
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Carl:
The main reason that Yongqiang and I decided to disable this feature by default
first is that we have not got a chance to test this optimizer heavily.
> 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-2206.10-r1384442.patch.txt,
> HIVE-2206.11-r1385084.patch.txt, 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.r1224646.patch.txt,
> HIVE-2206.8-r1237253.patch.txt, testQueries.2.q, YSmartPatchForHive.patch
>
>
> reference:
> http://www.cse.ohio-state.edu/hpcs/WWW/HTML/publications/papers/TR-11-7.pdf
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