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Posted to dev@phoenix.apache.org by "James Taylor (JIRA)" <ji...@apache.org> on 2016/04/02 09:14:25 UTC

[jira] [Created] (PHOENIX-2818) Optimize ORDERED group by

James Taylor created PHOENIX-2818:
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             Summary: Optimize ORDERED group by
                 Key: PHOENIX-2818
                 URL: https://issues.apache.org/jira/browse/PHOENIX-2818
             Project: Phoenix
          Issue Type: Bug
            Reporter: James Taylor
            Assignee: James Taylor


We currently check each row against the previous row when we execute a GROUP BY in row key order. We only need to check the previous row at the boundary while it's the same as the first row(s) in the next scan, kind of a hybrid between the ConcatResultIterator and the GroupedResultIterator.



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