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Posted to dev@phoenix.apache.org by "Mujtaba Chohan (JIRA)" <ji...@apache.org> on 2014/11/22 00:42:33 UTC

[jira] [Commented] (PHOENIX-1476) Immediately open scanner for parallel queries

    [ https://issues.apache.org/jira/browse/PHOENIX-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14221599#comment-14221599 ] 

Mujtaba Chohan commented on PHOENIX-1476:
-----------------------------------------

[~jamestaylor] Group by performance is back to normal with your patch.

> Immediately open scanner for parallel queries
> ---------------------------------------------
>
>                 Key: PHOENIX-1476
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1476
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>         Attachments: PHOENIX-1476.patch
>
>
> Seems like there may be a performance degradation of waiting to open the scanner for parallel queries. In particular GROUP BY queries.



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