phoenix-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-2818) Optimize ORDERED group by
Date Sat, 02 Apr 2016 07:14:25 GMT
James Taylor created PHOENIX-2818:
-------------------------------------

             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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message