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https://issues.apache.org/jira/browse/MAPREDUCE-2188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990447#comment-12990447
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Hudson commented on MAPREDUCE-2188:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #601 (See 
[https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/601/])
    MAPREDUCE-2188. The new API MultithreadedMapper doesn't initialize 
RecordReader. Contributed by Owen O'Malley.


> The new API MultithreadedMapper doesn't call the initialize method of the 
> RecordReader
> --------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2188
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2188
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>             Fix For: 0.22.0
>
>         Attachments: mr2188.patch
>
>
> The wrapping RecordReader in the Multithreaded Mapper is never initialized. 
> With HADOOP-6685, this becomes a problem because the ReflectionUtils.copy 
> requires a non-null configuration.

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