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https://issues.apache.org/jira/browse/MAPREDUCE-3703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13194418#comment-13194418
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Mahadev konar commented on MAPREDUCE-3703:
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Actually now that I think of it, we never had anything exposed via jmx for the
RM? Looks like this is the first bean we are adding. Is that right? I thought
some of the work that Thomas did on web services was also exposed via jmx. No?
> ResourceManager should provide node lists in JMX output
> -------------------------------------------------------
>
> Key: MAPREDUCE-3703
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3703
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 0.23.1
> Reporter: Eric Payne
> Assignee: Eric Payne
> Priority: Critical
> Attachments: MAPREDUCE-3703.1.txt
>
>
> In 0.20.*, the JMX UI for the JobTracker (http://<JobTrackerHost>:50030/jmx)
> showed lists of Live and BlackListed Nodes under the JobTrackerInfo section.
> In 0.23, the ResourceManager JMX UI shows the number of active,
> decommissioned, lost, unhealthy, and rebooted nodes under the ClusterMetrics
> section, but does not give the list of nodes.
> At least the list of active nodes is needed in JSON format.
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