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https://issues.apache.org/jira/browse/YARN-308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544113#comment-13544113
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Jason Lowe commented on YARN-308:
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bq. The AMRM protocol is not a delta protocol but an absolute one. So every ask
request sends all outstanding requests to the RM.
Are you sure? AppSchedulingInfo.updateResourceRequests looks like it's
treating it as a delta protocol to me, as it is not clearing prior asks when a
new ask arrives.
> Improve documentation about what "asks" means in AMRMProtocol
> -------------------------------------------------------------
>
> Key: YARN-308
> URL: https://issues.apache.org/jira/browse/YARN-308
> Project: Hadoop YARN
> Issue Type: Bug
> Components: api, resourcemanager
> Affects Versions: 2.0.2-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Fix For: 2.0.3-alpha
>
>
> It's unclear to me from reading the javadoc exactly what "asks" means when
> the AM sends a heartbeat to the RM. Is the AM supposed to send a list of all
> resources that it is waiting for? Or just inform the RM about new ones that
> it wants?
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