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From "Anand L Ranganathan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3850) hour() function returns 12 hour clock value when using timestamp datatype
Date Sat, 09 Feb 2013 20:21:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575253#comment-13575253
] 

Anand L Ranganathan commented on HIVE-3850:
-------------------------------------------


How do I assign a ticket to myself ? The edit option in assignee is disabled when I try to
assign myself.

                
> hour() function returns 12 hour clock value when using timestamp datatype
> -------------------------------------------------------------------------
>
>                 Key: HIVE-3850
>                 URL: https://issues.apache.org/jira/browse/HIVE-3850
>             Project: Hive
>          Issue Type: Bug
>          Components: UDF
>    Affects Versions: 0.9.0, 0.10.0
>            Reporter: Pieterjan Vriends
>             Fix For: 0.11.0
>
>         Attachments: HIVE-3850.patch.txt
>
>
> Apparently UDFHour.java does have two evaluate() functions. One that does accept a Text
object as parameter and one that does use a TimeStampWritable object as parameter. The first
function does return the value of Calendar.HOUR_OF_DAY and the second one of Calendar.HOUR.
In the documentation I couldn't find any information on the overload of the evaluation function.
I did spent quite some time finding out why my statement didn't return a 24 hour clock value.
> Shouldn't both functions return the same?

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