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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-4312) Choose between sort merge and hash join based on size of scanned data
Date Fri, 20 Oct 2017 20:57:00 GMT
James Taylor created PHOENIX-4312:
-------------------------------------

             Summary: Choose between sort merge and hash join based on size of scanned data
                 Key: PHOENIX-4312
                 URL: https://issues.apache.org/jira/browse/PHOENIX-4312
             Project: Phoenix
          Issue Type: Test
            Reporter: James Taylor


Using stats, we can determine how much data will be scanned. Though not perfect, this often
is a pretty accurate picture of how many rows will be joined together. We should drive the
determination of the join strategy based on cost.



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