Richard Lee commented on YARN-4191:

Is the RPC port necessarily HTTP, tho?  Seems that is not something YARN can 
count on and proxy for.  

I still think that the Samza people should put their REST endpoint under the 
trackingUrl, like mapreduce does.  That way, it would both not require any 
changes to YARN, and be using the ResourceManager proxy.

> Expose ApplicationMaster RPC port in ResourceManager REST endpoint
> ------------------------------------------------------------------
>                 Key: YARN-4191
>                 URL: https://issues.apache.org/jira/browse/YARN-4191
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>    Affects Versions: 2.7.1
>            Reporter: Richard Lee
>            Priority: Minor
> Currently, the ResourceManager REST endpoint returns only the trackingUrl for 
> the ApplicationMaster.  Some AMs, however, have their REST endpoints on the 
> RPC port.  However, the RM does not expose the AM RPC port via REST for some 
> reason.

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