Rohith commented on YARN-2599:

I do agree that StandBy RM should expose jmx and metrics. I did some analysis 
by comparing /jmx for active rm's and standby rm's(with private patch). All the 
metrics that were listed in /jmx are consistent with Active details and standby 
details. But I could not find any details when "/metrics" page when I tried 
from browser's(IE,chrome and fairefox).It displayed empty page!!! . I think 
/metrics details are embedded in /jmx only.

> Standby RM should also expose some jmx and metrics
> --------------------------------------------------
>                 Key: YARN-2599
>                 URL: https://issues.apache.org/jira/browse/YARN-2599
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.5.1
>            Reporter: Karthik Kambatla
>            Assignee: Rohith
> YARN-1898 redirects jmx and metrics to the Active. As discussed there, we 
> need to separate out metrics displayed so the Standby RM can also be 
> monitored. 

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