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https://issues.apache.org/jira/browse/PHOENIX-4616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16428601#comment-16428601
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James Taylor commented on PHOENIX-4616:
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Should be ok now, but let’s see for the next build. Thanks!

> Move join query optimization out from QueryCompiler into QueryOptimizer
> -----------------------------------------------------------------------
>
>                 Key: PHOENIX-4616
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4616
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: Maryann Xue
>            Assignee: Maryann Xue
>            Priority: Major
>             Fix For: 4.14.0, 5.0.0
>
>         Attachments: PHOENIX-4616.patch
>
>
> Currently we do optimization for join queries inside QueryCompiler, which 
> makes the APIs and code logic confusing, so we need to move join optimization 
> logic into QueryOptimizer.
>  Similarly, but probably with a different approach, we need to optimize UNION 
> ALL queries and derived table sub-queries in QueryOptimizer.optimize().
> Please also refer to this comment:
> https://issues.apache.org/jira/browse/PHOENIX-4585?focusedCommentId=16367616&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16367616



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