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https://issues.apache.org/jira/browse/MAPREDUCE-5847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13974577#comment-13974577
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Jason Lowe commented on MAPREDUCE-5847:
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Isn't this an incompatible change? It looks like this will no longer compute
anything for the
org.apache.hadoop.mapreduce.lib.output.FileOutputFormatCounter.BYTES_WRITTEN
counter which will break clients who are expecting this to be present on the
job.
> Remove redundant code for fileOutputByteCounter in MapTask and ReduceTask
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-5847
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5847
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv1, mrv2, task
> Affects Versions: 2.4.0
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Attachments: MAPREDUCE-5847.v01.patch, MAPREDUCE-5847.v02.patch
>
>
> Both MapTask and ReduceTask carry redundant code to update BYTES_WRITTEN
> counter. However, {{Task.updateCounters}} uses file system stats for this.
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