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https://issues.apache.org/jira/browse/HIVE-5775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13971970#comment-13971970
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Laljo John Pullokkaran commented on HIVE-5775:
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I don't think this should go in to trunk yet.
I need to remove some of the limitations (outer join, union) before it can go
on to trunk.
Also a better algorithm for join permutations is also being worked on.
> Introduce Cost Based Optimizer to Hive
> --------------------------------------
>
> Key: HIVE-5775
> URL: https://issues.apache.org/jira/browse/HIVE-5775
> Project: Hive
> Issue Type: New Feature
> Reporter: Laljo John Pullokkaran
> Assignee: Laljo John Pullokkaran
> Attachments: CBO-2.pdf, HIVE-5775.1.patch
>
>
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