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Date: Mon, 11 Feb 2013 04:13:13 +0000 (UTC)
From: "Arun A K (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Message-ID: <JIRA.12625682.1357136199965.271792.1360555993830@arcas>
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Subject: [jira] [Commented] (HIVE-3850) hour() function returns 12 hour
 clock value when using timestamp datatype
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    [ https://issues.apache.org/jira/browse/HIVE-3850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575613#comment-13575613 ] 

Arun A K commented on HIVE-3850:
--------------------------------


Hello  [~analog.sony]

There is a patch already available with the suggested changes made, submitted by Mr. [~710154]. So what is the point in submitting the same patch again ? More over there is a pending review request for the same https://reviews.apache.org/r/9171/ . Request you to justify your act? Have you tried to include something different in the previous work? 

                
> 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, 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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