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https://issues.apache.org/jira/browse/HADOOP-1007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12471865
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Hadoop QA commented on HADOOP-1007:
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+1, because
http://issues.apache.org/jira/secure/attachment/12350798/HADOOP-1007.patch
applied and successfully tested against trunk revision r505512.
> Names used for map, reduce, and shuffle metrics should be unique
> ----------------------------------------------------------------
>
> Key: HADOOP-1007
> URL: https://issues.apache.org/jira/browse/HADOOP-1007
> Project: Hadoop
> Issue Type: Improvement
> Components: metrics
> Affects Versions: 0.12.0
> Reporter: Nigel Daley
> Assigned To: Nigel Daley
> Priority: Trivial
> Fix For: 0.12.0
>
> Attachments: HADOOP-1007.patch
>
>
> The names used for map, reduce, and shuffle metrics currently overlap:
> Map metrics:
> input_bytes
> input_records
> output_bytes
> output_records
> Recduce metrics:
> input_records
> output_records
> Shuffle metrics:
> input_bytes
> I propose that the metric names be unique:
> map_input_bytes
> map_input_records
> map_output_bytes
> map_output_records
> shuffle_input_bytes
> reduce_input_records
> reduce_output_records
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