[jira] [Created] (HIVE-8284) Equality comparison is done between two floating point variables in HiveRelMdUniqueKeys#getUniqueKeys()

[Ted Yu (JIRA)]

Ted Yu created HIVE-8284:
----------------------------

             Summary: Equality comparison is done between two floating point 
variables in HiveRelMdUniqueKeys#getUniqueKeys()
                 Key: HIVE-8284
                 URL: https://issues.apache.org/jira/browse/HIVE-8284
             Project: Hive
          Issue Type: Bug
            Reporter: Ted Yu
            Priority: Minor


{code}
    double numRows = tScan.getRows();
...
        double r = cStat.getRange().maxValue.doubleValue() -
            cStat.getRange().minValue.doubleValue() + 1;
        isKey = (numRows == r);
{code}
The equality check should use a small epsilon as tolerance.



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