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https://issues.apache.org/jira/browse/MAPREDUCE-4079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Joseph Evans updated MAPREDUCE-4079:
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Attachment: MR-4079-trunk.txt
Kicking Jenkins Again.
> Allow MR AppMaster to limit ephemeral port range.
> -------------------------------------------------
>
> Key: MAPREDUCE-4079
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4079
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mr-am, mrv2
> Affects Versions: 0.23.2, 2.0.0
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Priority: Blocker
> Attachments: MR-4079-full-branch-0.23.txt,
> MR-4079-full-branch-0.23.txt, MR-4079-full-branch-0.23.txt,
> MR-4079-trunk.txt, MR-4079-trunk.txt, MR-4079-trunk.txt, MR-4079-trunk.txt
>
>
> Having the MapReduce Application Masters bind to any ephemeral port makes it
> very difficult to setup ACLs. mapreduce.job.am-access-disabled from
> MAPREDUCE-3251 is not a practical permanent solution for all jobs.
> Especially for tools like pig where they are not aware of
> mapreduce.job.am-access-disabled and may deal with it properly.
> We should add in a config option that would allow someone to restrict the
> range of ports that the MR-AM can bind to. It will slow down startup in some
> cases because we will have to probe for open ports instead of just asking the
> OS to find one for us. But we can make that conditional on this config so
> users who do not set this config do not see any performance degradation.
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