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Posted to issues@kylin.apache.org by "kangkaisen (JIRA)" <ji...@apache.org> on 2016/10/27 13:03:00 UTC

[jira] [Created] (KYLIN-2135) Enlarge FactDistinctColumns reducer number

kangkaisen created KYLIN-2135:
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             Summary: Enlarge FactDistinctColumns reducer number
                 Key: KYLIN-2135
                 URL: https://issues.apache.org/jira/browse/KYLIN-2135
             Project: Kylin
          Issue Type: Improvement
          Components: Job Engine
    Affects Versions: v1.5.4.1
            Reporter: kangkaisen
            Assignee: kangkaisen


When the hive table has billions of rows and use global dictionary for precise count distinct measures, the  {{Extract Fact Table Distinct Columns}} job will run o long time.
So we could use more reducer to deal with the one column.



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