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Posted to dev@hive.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2017/03/10 23:13:04 UTC

[jira] [Created] (HIVE-16178) corr UDAF standard compliance

Zoltan Haindrich created HIVE-16178:
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             Summary: corr UDAF standard compliance
                 Key: HIVE-16178
                 URL: https://issues.apache.org/jira/browse/HIVE-16178
             Project: Hive
          Issue Type: Sub-task
            Reporter: Zoltan Haindrich
            Priority: Minor


the standard defines corner cases when it should return null - but the current result is NaN.

If N * SUMX2 equals SUMX * SUMX , then the result is the null value.
and
If N * SUMY2 equals SUMY * SUMY , then the result is the null value.



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