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https://issues.apache.org/jira/browse/HADOOP-5710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712628#action_12712628
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Amareshwari Sriramadasu commented on HADOOP-5710:
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Contrib test failures are not related to patch. They fail on trunk also.
> Counter MAP_INPUT_BYTES missing from new mapreduce api.
> -------------------------------------------------------
>
> Key: HADOOP-5710
> URL: https://issues.apache.org/jira/browse/HADOOP-5710
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Amareshwari Sriramadasu
> Assignee: Amareshwari Sriramadasu
> Fix For: 0.21.0
>
> Attachments: patch-5710-1.txt, patch-5710-2.txt, patch-5710.txt
>
>
> MapTask, with current new mapreduce api, does not maintain MAP_INPUT_BYTES
> counter. Since RecordReader doesnot have getPos() api, it is not possible for
> the map task to maintain. Individual record readers (LineRecordReader,
> SequenceFileRecordReader) could be modified to maintain the same.
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