Junping Du updated YARN-3586:
    Attachment: YARN-3586-demo.patch

Per [~vinodkv]'s request in YARN-3445, upload a quick patch here to demonstrate 
how YARN-3445 could work and help in our case. More completed patch with unit 
tests will be uploaded later when we figure out YARN-3445. 

> RM only get back addresses of Collectors that NM needs to know.
> ---------------------------------------------------------------
>                 Key: YARN-3586
>                 URL: https://issues.apache.org/jira/browse/YARN-3586
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager, timelineserver
>            Reporter: Junping Du
>            Assignee: Junping Du
>         Attachments: YARN-3586-demo.patch
> After YARN-3445, RM cache runningApps for each NM. So RM heartbeat back to NM 
> should only include collectors' address for running applications against 
> specific NM.

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