[jira] [Created] (KYLIN-1623) Make the hll precision for data samping configurable

[Shaofeng SHI (JIRA)]

Shaofeng SHI created KYLIN-1623:
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             Summary: Make the hll precision for data samping configurable
                 Key: KYLIN-1623
                 URL: https://issues.apache.org/jira/browse/KYLIN-1623
             Project: Kylin
          Issue Type: New Feature
          Components: Job Engine
            Reporter: Shaofeng SHI
            Assignee: Shaofeng SHI


now kylin uses hll(14) for sampling; it should be configurable at cube level 
for small or large cubes.



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