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https://issues.apache.org/jira/browse/PHOENIX-1594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Taylor resolved PHOENIX-1594.
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Resolution: Fixed
Fix Version/s: 4.3
> 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
> Assignee: James Taylor
> Fix For: 4.3
>
> 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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