choose hive.groupby.skewindata intelligently
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Key: HIVE-1745
URL: https://issues.apache.org/jira/browse/HIVE-1745
Project: Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Namit Jain
Currently, it is set to false always - it leads to problems when we are issuing
select distinct from very large tables with a very large number of distincts.
We need to tune it intelligently
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