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https://issues.apache.org/jira/browse/YARN-4676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15240325#comment-15240325
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Robert Kanter commented on YARN-4676:
-------------------------------------

Thanks for updating the patch.  I'll take a look either late today or tomorrow. 
 The docs are simply markdown files in the repo.  For instance, here is the 
docs for the {{rmadmin}} command \[1\].  Looks like someone has already updated 
the usage to mention the {{-g}} argument for {{refreshNodes}}, but they forgot 
to update the "COMMAND_OPTIONS" and "Description" after it.  We should fix 
that.  As documentation for more details on how to do a graceful decom, I 
wonder if that should go on its own page like these \[2\].

\[1\] 
https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/YarnCommands.md#rmadmin
\[2\] 
https://github.com/apache/hadoop/tree/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown



> Automatic and Asynchronous Decommissioning Nodes Status Tracking
> ----------------------------------------------------------------
>
>                 Key: YARN-4676
>                 URL: https://issues.apache.org/jira/browse/YARN-4676
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.8.0
>            Reporter: Daniel Zhi
>            Assignee: Daniel Zhi
>              Labels: features
>         Attachments: GracefulDecommissionYarnNode.pdf, YARN-4676.004.patch, 
> YARN-4676.005.patch, YARN-4676.006.patch, YARN-4676.007.patch, 
> YARN-4676.008.patch, YARN-4676.009.patch, YARN-4676.010.patch
>
>
> DecommissioningNodeWatcher inside ResourceTrackingService tracks 
> DECOMMISSIONING nodes status automatically and asynchronously after 
> client/admin made the graceful decommission request. It tracks 
> DECOMMISSIONING nodes status to decide when, after all running containers on 
> the node have completed, will be transitioned into DECOMMISSIONED state. 
> NodesListManager detect and handle include and exclude list changes to kick 
> out decommission or recommission as necessary.



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