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Posted to dev@hive.apache.org by "JongWon Park (JIRA)" <ji...@apache.org> on 2014/10/14 10:58:34 UTC

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

     [ https://issues.apache.org/jira/browse/HIVE-8284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

JongWon Park updated HIVE-8284:
-------------------------------
    Attachment: HIVE-8284.patch

> 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
>         Attachments: HIVE-8284.patch
>
>
> {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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