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https://issues.apache.org/jira/browse/HADOOP-3062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12624451#action_12624451
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Tsz Wo (Nicholas), SZE commented on HADOOP-3062:
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+1 new patch looks good.
> Need to capture the metrics for the network ios generate by dfs reads/writes
> and map/reduce shuffling and break them down by racks
> ------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-3062
> URL: https://issues.apache.org/jira/browse/HADOOP-3062
> Project: Hadoop Core
> Issue Type: Improvement
> Components: metrics
> Reporter: Runping Qi
> Assignee: Chris Douglas
> Fix For: 0.19.0
>
> Attachments: 3062-0.patch, 3062-1.patch, 3062-2.patch, 3062-3.patch,
> 3062-4.patch
>
>
> In order to better understand the relationship between hadoop performance and
> the network bandwidth, we need to know
> what the aggregated traffic data in a cluster and its breakdown by racks.
> With these data, we can determine whether the network
> bandwidth is the bottleneck when certain jobs are running on a cluster.
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