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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-1594) Using KeyOnlyFilter for simple query of select count(1) from <table>
Date Tue, 20 Jan 2015 06:46:34 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-1594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14283510#comment-14283510
] 

Hudson commented on PHOENIX-1594:
---------------------------------

SUCCESS: Integrated in Phoenix-master #558 (See [https://builds.apache.org/job/Phoenix-master/558/])
PHOENIX-1594 Using KeyOnlyFilter for simple query of select count(1) from <table> (jtaylor:
rev 6f43d467c6de0ef439bfff8bada90f77a305d9d1)
* phoenix-core/src/it/java/org/apache/phoenix/end2end/index/GlobalIndexOptimizationIT.java


> Using KeyOnlyFilter for simple query of select count(1) from <table>
> --------------------------------------------------------------------
>
>                 Key: PHOENIX-1594
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1594
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: Jeffrey Zhong
>         Attachments: PHOENIX-1594.patch
>
>
> I found that underlying scan for query "select count(1) or count(*) from <table>"
still project all columns. 
> It should be fast if we use KeyOnlyFilter for this simple query.



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