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https://issues.apache.org/jira/browse/MAPREDUCE-2188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12987889#action_12987889
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Priyo Mustafi commented on MAPREDUCE-2188:
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Tested the patch several times. Looks good.
> 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
> 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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