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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