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https://issues.apache.org/jira/browse/MAPREDUCE-653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842558#action_12842558
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eric baldeschwieler commented on MAPREDUCE-653:
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Right. My point is that this would seem likely to lead to the bad outcome of
many slots used lightly. Sleeps are not a good use of cluster resources. To
keep things in check, one would need to use other means to limit the number of
maps that a distcp job can run. This would seem to be a bad thing to me.
Users could easily use distcp to gum up clusters with many tasks that are just
sleeping.
> distcp can support bandwidth limiting
> -------------------------------------
>
> Key: MAPREDUCE-653
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-653
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: distcp
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Attachments: d_bw.patch, d_bw.v1.patch, d_bw.v2.patch
>
>
> distcp should support an option for user to specify the bandwidth limit for
> the distcp job.
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