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https://issues.apache.org/jira/browse/YARN-3445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14530659#comment-14530659
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Junping Du commented on YARN-3445:
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Thanks [~vinodkv] for review and comments, I just deliver a quick demo patch in
YARN-3586 (target for YARN-2928) to demonstrate how patch here helps to improve
RM get back NM with limited number of collector addresses. Can you help to take
a look?
BTW, YARN-3212 for gracefully decommission need this patch too, so our target
branch here is still for trunk/branch-2.
> Cache runningApps in RMNode for getting running apps on given NodeId
> --------------------------------------------------------------------
>
> Key: YARN-3445
> URL: https://issues.apache.org/jira/browse/YARN-3445
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager, resourcemanager
> Affects Versions: 2.7.0
> Reporter: Junping Du
> Assignee: Junping Du
> Labels: BB2015-05-TBR
> Attachments: YARN-3445-v2.patch, YARN-3445.patch
>
>
> Per discussion in YARN-3334, we need filter out unnecessary collectors info
> from RM in heartbeat response. Our propose is to add cache for runningApps in
> RMNode, so RM only send collectors for local running apps back. This is also
> needed in YARN-914 (graceful decommission) that if no running apps in NM
> which is in decommissioning stage, it will get decommissioned immediately.
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