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https://issues.apache.org/jira/browse/YARN-3630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14543071#comment-14543071
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Xianyin Xin commented on YARN-3630:
-----------------------------------
Thanks [~kasha] and [~leftnoteasy]. Indeed the waiting events in the scheduler
event handler queue is an important index to show the scheduler's load. Now the
queue is a private variable of the inner class {{SchedulerEventDispatcher}} and
it can't be visited from outer space, should we add some methods in
{{ClusterMetrics}} or other monitor classes to get the queue information? If we
show the events in web UI, maybe we should also consider which type information
could be shown, e.g., #events? #events of each app? #events of node update? or
something like this.
> 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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