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Date: Fri, 17 Jul 2009 09:56:15 -0700 (PDT)
From: "Hudson (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Commented: (MAPREDUCE-680) Reuse of Writable objects is
 improperly handled by MRUnit
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12732603#action_12732603 ] 

Hudson commented on MAPREDUCE-680:
----------------------------------

Integrated in Hadoop-Mapreduce-trunk #25 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-Mapreduce-trunk/25/])
    

> Reuse of Writable objects is improperly handled by MRUnit
> ---------------------------------------------------------
>
>                 Key: MAPREDUCE-680
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-680
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>             Fix For: 0.21.0
>
>         Attachments: MAPREDUCE-680.patch
>
>
> As written, MRUnit's MockOutputCollector simply stores references to the objects passed in to its collect() method. Thus if the same Text (or other Writable) object is reused as an output containiner multiple times with different values, these separate values will not all be collected. MockOutputCollector needs to properly use io.serializations to deep copy the objects sent in.

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