Wangda Tan commented on YARN-3630:

+1 for the general idea, [~xinxianyin], I think one very good point which you 
mentioned in 
 showing the events waiting in the scheduler event handler queue in web UI is 
more important to figure out if scheduler being overloaded. Which could be 
addressed in separated JIRA.

> YARN should suggest a heartbeat interval for applications
> ---------------------------------------------------------
>                 Key: YARN-3630
>                 URL: https://issues.apache.org/jira/browse/YARN-3630
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager, scheduler
>    Affects Versions: 2.7.0
>            Reporter: Zoltán Zvara
>            Assignee: Xianyin Xin
>            Priority: Minor
> It seems currently applications - for example Spark - are not adaptive to RM 
> regarding heartbeat intervals. RM should be able to suggest a desired 
> heartbeat interval to applications.

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