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Posted to dev@hive.apache.org by "Prasanth J (JIRA)" <ji...@apache.org> on 2014/08/14 21:56:18 UTC

[jira] [Created] (HIVE-7734) Join stats annotation rule is not updating columns statistics correctly

Prasanth J created HIVE-7734:
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             Summary: Join stats annotation rule is not updating columns statistics correctly
                 Key: HIVE-7734
                 URL: https://issues.apache.org/jira/browse/HIVE-7734
             Project: Hive
          Issue Type: Sub-task
    Affects Versions: 0.14.0
            Reporter: Prasanth J
            Assignee: Prasanth J


HIVE-7679 is not doing the correct thing. The scale down/up factor updating column stats was wrong as ratio = newRowCount/oldRowCount is always infinite (oldRowCount = 0). The old row count should be retrieved from parent corresponding to the current column whose statistics is being updated.



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