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https://issues.apache.org/jira/browse/YARN-998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15191389#comment-15191389
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Junping Du commented on YARN-998:
---------------------------------
Thanks Kenji for providing a sample patch.
Several improvements should make over the current sample patch:
1. We should load DynamicResourceConfiguration only one time in
ResourceTrackerService in initialization instead of load it every time NM
register it.
2. The config will be refreshed when RMAdmin CLI - "refreshNodeResources" is
triggered to make sure NM restart case is addressed.
3. No need to persistent individual node update CLI - "updateNodeResource" to
dynamic resource file. If user want it get persistent, then it should update
the dynamic resource file as long as trigger the node CLI.
4. Some duplicated code with YARN-1911 should get removed.
Will deliver an updated patch soon.
> Persistent resource change during NM/RM restart
> -----------------------------------------------
>
> Key: YARN-998
> URL: https://issues.apache.org/jira/browse/YARN-998
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: graceful, nodemanager, scheduler
> Reporter: Junping Du
> Assignee: Junping Du
> Attachments: YARN-998-sample.patch
>
>
> When NM is restarted by plan or from a failure, previous dynamic resource
> setting should be kept for consistency.
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