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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-12325) Turn hive.map.groupby.sorted on by default
Date Tue, 03 Nov 2015 19:01:27 GMT
Ashutosh Chauhan created HIVE-12325:
---------------------------------------

             Summary: Turn hive.map.groupby.sorted on by default
                 Key: HIVE-12325
                 URL: https://issues.apache.org/jira/browse/HIVE-12325
             Project: Hive
          Issue Type: Improvement
          Components: Logical Optimizer
            Reporter: Ashutosh Chauhan


When applicable it can avoid shuffle phase altogether for group by, which will be a performance
win. 



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