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https://issues.apache.org/jira/browse/MAPREDUCE-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13246609#comment-13246609
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Robert Joseph Evans commented on MAPREDUCE-3315:
------------------------------------------------
If you pass in a port number of 0 the OS will pick a free port. You can then
query the server to know what port it actually bound to.
> Master-Worker Application on YARN
> ---------------------------------
>
> Key: MAPREDUCE-3315
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3315
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Sharad Agarwal
> Assignee: Sharad Agarwal
> Fix For: 0.24.0
>
> Attachments: MAPREDUCE-3315-1.patch, MAPREDUCE-3315-2.patch,
> MAPREDUCE-3315.patch
>
>
> Currently master worker scenarios are forced fit into Map-Reduce. Now with
> YARN, these can be first class and would benefit real/near realtime workloads
> and be more effective in using the cluster resources.
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