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https://issues.apache.org/jira/browse/YARN-10896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17693867#comment-17693867
 ] 

ASF GitHub Bot commented on YARN-10896:
---------------------------------------

hadoop-yetus commented on PR #5436:
URL: https://github.com/apache/hadoop/pull/5436#issuecomment-1445889299

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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> RM fail over is not reporting the nodes DECOMMISSIONED 
> -------------------------------------------------------
>
>                 Key: YARN-10896
>                 URL: https://issues.apache.org/jira/browse/YARN-10896
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Sushil Ks
>            Assignee: Sushil Ks
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: YARN-10896.001.patch
>
>
> Whenever we add the host entries into the exclude file in order to 
> DECOMMISSION the Nodemanager, we would issue the *yarn rmadmin -refreshNodes* 
> command to transition the nodes from RUNNING to DECOMMISSIONED state. However 
> if the fail over to standby resource manager happens and the exclude file has 
> the list of hosts to be disallowed, then these disallowed nodes are never 
> seen through the Cluster Metrics on the new active resource manager. 
> Whatever host entries that are present in the exclude files are being listed 
> in the Cluster Metrics whenever resource manager is restarted, i.e as part of 
> the service init of *NodeListManager* , however during fail over this info is 
> lost. Hence this patch tries to set the  *DECOMMISSIONED* nodes inside the RM 
> Context so that its available through Cluster Metrics whenever we issue the 
> *yarn rmadmin -refreshNodes* command.



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