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https://issues.apache.org/jira/browse/HADOOP-6087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ravi Gummadi updated HADOOP-6087:
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Attachment: d_bw.patch
Attaching patch that supports the option -bwlimit <bandwidthInBytesPerSec>.
A separate thread in each map monitors the bandwidth by perodically calculating
the available bandwidth for this map and sets sleeptime for the copy-thread.
copy-thread sleeps for that amount of time and starts copying again.
distcp.bandwidth.limit is the config property equivalent to -bwlimit option.
distcp.bandwidth.monitor.interval(with default value of 60000millisec) is the
period for the bandwidth monitor thread to execute periodically and set the
sleeptime.
Please review and provide your comments.
> distcp can support bandwidth limiting
> -------------------------------------
>
> Key: HADOOP-6087
> URL: https://issues.apache.org/jira/browse/HADOOP-6087
> Project: Hadoop Core
> Issue Type: New Feature
> Components: tools/distcp
> Affects Versions: 0.21.0
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Fix For: 0.21.0
>
> Attachments: d_bw.patch
>
>
> distcp should support an option for user to specify the bandwidth limit for
> the distcp job.
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