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Date: Tue, 30 Oct 2012 03:36:14 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <497462328.42655.1351568174969.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (HADOOP-2) Reused Keys and Values fail with a
 Combiner
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    [ https://issues.apache.org/jira/browse/HADOOP-2?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13486624#comment-13486624 ] 

Hudson commented on HADOOP-2:
-----------------------------

Integrated in flume-trunk #320 (See [https://builds.apache.org/job/flume-trunk/320/])
    FLUME-1653: Update Hadoop-23 profile to point to hadoop-2 alpha artifacts (Revision 831a86fc5501a8624b184ea65e53749df31692b8)

     Result = SUCCESS
                
> Reused Keys and Values fail with a Combiner
> -------------------------------------------
>
>                 Key: HADOOP-2
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>             Fix For: 0.1.0
>
>         Attachments: clone-map-output.patch
>
>
> If the map function reuses the key or value by destructively modifying it after the output.collect(key,value) call and your application uses a combiner, the data is corrupted by having lots of instances with the last key or value.

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