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https://issues.apache.org/jira/browse/MAPREDUCE-3920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217277#comment-13217277
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Dave Thompson commented on MAPREDUCE-3920:
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Unit test TestNodeID was testing comparison operations between port numbers.
That comparison test was based on hard coded values. I adjusted the hard coded
values so that they again test the comparison operations they intended. I'll
resubmit patch.
> Revise yarn default port number selection
> -----------------------------------------
>
> Key: MAPREDUCE-3920
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3920
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: nodemanager, resourcemanager
> Affects Versions: 0.23.1
> Reporter: Dave Thompson
> Assignee: Dave Thompson
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3920-branch-0.23.1.patch
>
>
> The default port numbers chosen for nodemanager and resourcemanager are
> random and widely spread out creating unnecessary overhead in deployments
> where site operators care, and deploy many clusters.
> Current and proposed new default ports are as follows:
> Current New Config Property
> ------- --- ---------------
> 4344 8040 yarn.nodemanager.localizer.address
> 45454 8041 yarn.nodemanager.address
> 9999 8042 yarn.nodemanager.webapp.address
> 8030 8030(NC) yarn.resourcemanager.scheduler.address
> 8025 8031 yarn.resourcemanager.resource-tracker.address
> 8040 8032 yarn.resourcemanager.address
> 8141 8033 yarn.resourcemanager.admin.address
> Affected files include: embedded defaults (YarnConfiguration.java),
> yarn-default.xml, documentation and unit tests.
>
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