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https://issues.apache.org/jira/browse/YARN-1071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jian He updated YARN-1071:
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Attachment: YARN-1071.4.patch
> ResourceManager's decommissioned and lost node count is 0 after restart
> -----------------------------------------------------------------------
>
> Key: YARN-1071
> URL: https://issues.apache.org/jira/browse/YARN-1071
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.1.0-beta
> Reporter: Srimanth Gunturi
> Assignee: Jian He
> Attachments: YARN-1071.1.patch, YARN-1071.2.patch, YARN-1071.3.patch,
> YARN-1071.4.patch
>
>
> I had 6 nodes in a cluster with 2 NMs stopped. Then I put a host into YARN's
> {{yarn.resourcemanager.nodes.exclude-path}}. After running {{yarn rmadmin
> -refreshNodes}}, RM's JMX correctly showed decommissioned node count:
> {noformat}
> "NumActiveNMs" : 3,
> "NumDecommissionedNMs" : 1,
> "NumLostNMs" : 2,
> "NumUnhealthyNMs" : 0,
> "NumRebootedNMs" : 0
> {noformat}
> After restarting RM, the counts were shown as below in JMX.
> {noformat}
> "NumActiveNMs" : 3,
> "NumDecommissionedNMs" : 0,
> "NumLostNMs" : 0,
> "NumUnhealthyNMs" : 0,
> "NumRebootedNMs" : 0
> {noformat}
> Notice that the lost and decommissioned NM counts are both 0.
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