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Posted to dev@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2015/02/13 21:11:12 UTC

[jira] [Created] (HIVE-9688) Support SAMPLE operator in hive

Prasanth Jayachandran created HIVE-9688:
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             Summary: Support SAMPLE operator in hive
                 Key: HIVE-9688
                 URL: https://issues.apache.org/jira/browse/HIVE-9688
             Project: Hive
          Issue Type: New Feature
            Reporter: Prasanth Jayachandran


Hive needs SAMPLE operator to support parallel order by, skew joins and count + distinct optimizations. Random, Reservoir and Stratified sampling should cover most of the cases.



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