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Posted to dev@phoenix.apache.org by "Jeffrey Zhong (JIRA)" <ji...@apache.org> on 2015/01/16 19:51:34 UTC

[jira] [Created] (PHOENIX-1594) Using KeyOnlyFilter for simple query "select count(1) from "
Jeffrey Zhong created PHOENIX-1594:
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             Summary: Using KeyOnlyFilter for simple query "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


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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