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https://issues.apache.org/jira/browse/YARN-275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13569115#comment-13569115
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Siddharth Seth commented on YARN-275:
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bq. To be clear, I did not mean we should implement dynamic heartbeat
intervals. Just change the protocol so that heartbeat comes from the RM to the
NM. The dynamic part can be done later. I think the patch in this jira (after
some minor polishing) limits itself to just the protocol changes as a first
step. The RM sends a fixed value obtained via config.
Misunderstood your previous comment to include a dynamic back off. Having the
RM dictate the heartbeat interval seems reasonably independent of changes in
YARN-365. As an initial step, do you think this will be simpler via config -
instead of having the scheduler indicate whether the NMs should back off (like
is done in the current patch)?
> Make NodeManagers to NOT blindly heartbeat irrespective of whether previous
> heartbeat is processed or not.
> ----------------------------------------------------------------------------------------------------------
>
> Key: YARN-275
> URL: https://issues.apache.org/jira/browse/YARN-275
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager, resourcemanager
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Xuan Gong
> Attachments: Prototype.txt, YARN-270.1.patch
>
>
> We need NMs to back off. The event handler mechanism is very scalable but not
> infinitely so :)
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