Karthik Kambatla commented on YARN-3467:

We should add this information to ApplicationAttempt page, and also preferably 
to the RM Web UI. I have heard asks for both number of containers and allocated 
resources on the RM applications page, so people can sort applications by that. 

> Expose allocatedMB, allocatedVCores, and runningContainers metrics on running 
> Applications in RM Web UI
> -------------------------------------------------------------------------------------------------------
>                 Key: YARN-3467
>                 URL: https://issues.apache.org/jira/browse/YARN-3467
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: webapp, yarn
>    Affects Versions: 2.5.0
>            Reporter: Anthony Rojas
>            Assignee: Anubhav Dhoot
>            Priority: Minor
>         Attachments: ApplicationAttemptPage.png
> The YARN REST API can report on the following properties:
> *allocatedMB*: The sum of memory in MB allocated to the application's running 
> containers
> *allocatedVCores*: The sum of virtual cores allocated to the application's 
> running containers
> *runningContainers*: The number of containers currently running for the 
> application
> Currently, the RM Web UI does not report on these items (at least I couldn't 
> find any entries within the Web UI).
> It would be useful for YARN Application and Resource troubleshooting to have 
> these properties and their corresponding values exposed on the RM WebUI.

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