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From "Sushanth Sowmyan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7067) Min() and Max() on Timestamp and Date columns for ORC returns wrong results
Date Fri, 16 May 2014 21:56:15 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14000382#comment-14000382
] 

Sushanth Sowmyan commented on HIVE-7067:
----------------------------------------

Thanks folks, I'll include this in 0.13.1 RC2.

> Min() and Max() on Timestamp and Date columns for ORC returns wrong results
> ---------------------------------------------------------------------------
>
>                 Key: HIVE-7067
>                 URL: https://issues.apache.org/jira/browse/HIVE-7067
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>            Priority: Critical
>             Fix For: 0.14.0
>
>         Attachments: HIVE-7067.1.patch, HIVE-7067.2.patch, HIVE-7067.branch-13.2.patch
>
>
> min() and max() of timestamp and date columns of ORC table returns wrong results. The
reason for that is when ORC creates object inspectors for date and timestamp it uses JAVA
primitive objects as opposed to WRITABLE objects. When get() is performed on java primitive
objects, a reference to the underlying object is returned whereas when get() is performed
on writable objects, a copy of the underlying object is returned. 
> Fix is to change the object inspector creation to return writable objects for timestamp
and date.



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