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From "He Yongqiang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-1506) Optimize number of mr jobs produced by group by sort by
Date Mon, 02 Aug 2010 18:26:16 GMT
Optimize number of mr jobs produced by group by sort by
-------------------------------------------------------

                 Key: HIVE-1506
                 URL: https://issues.apache.org/jira/browse/HIVE-1506
             Project: Hadoop Hive
          Issue Type: Improvement
            Reporter: He Yongqiang


Right now,

select key, INPUT__FILE__NAME, count(value from src group by key, INPUT__FILE__NAME sort by
key
require 2 jobs
and
select key, INPUT__FILE__NAME, count(value from src group by key, INPUT__FILE__NAME sort by
key limit 3
require 3 jobs.

Both can be done with just one job.

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