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https://issues.apache.org/jira/browse/YARN-3223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15018487#comment-15018487
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Brook Zhou commented on YARN-3223:
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Makes sense.
One thing that I'm not sure about - RMNodeImpl does not know directly the
amount of usedResource in order to trigger an RMNodeResourceUpdateEvent. I can
use rmNode.context.getScheduler().(rmNode.getNodeID()).getUsedResource(), but
I'm not sure if adding that dependency on scheduler is okay.
> Resource update during NM graceful decommission
> -----------------------------------------------
>
> Key: YARN-3223
> URL: https://issues.apache.org/jira/browse/YARN-3223
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager, resourcemanager
> Affects Versions: 2.7.1
> Reporter: Junping Du
> Assignee: Brook Zhou
> Attachments: YARN-3223-v0.patch, YARN-3223-v1.patch,
> YARN-3223-v2.patch
>
>
> During NM graceful decommission, we should handle resource update properly,
> include: make RMNode keep track of old resource for possible rollback, keep
> available resource to 0 and used resource get updated when
> container finished.
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