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https://issues.apache.org/jira/browse/YARN-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16724411#comment-16724411
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Billie Rinaldi commented on YARN-9075:
--------------------------------------

Thanks for the review, [~eyang]. I uploaded patch 5 that fixes the checkstyle 
errors. With the current patch, the NM should detect manifest file changes in 2 
minutes. (The NM only considers service name and version when determining if 
its current version is up to date, so if there are only changes to the service 
configuration it will not reload the service.) If a service is removed from the 
manifest, the NM will stop and remove the running aux service. I think we can 
use YARN-9146 to track improvements in telling the NM when to reload services.

> Dynamically add or remove auxiliary services
> --------------------------------------------
>
>                 Key: YARN-9075
>                 URL: https://issues.apache.org/jira/browse/YARN-9075
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Billie Rinaldi
>            Assignee: Billie Rinaldi
>            Priority: Major
>         Attachments: YARN-9075.001.patch, YARN-9075.002.patch, 
> YARN-9075.003.patch, YARN-9075.004.patch, YARN-9075.005.patch, 
> YARN-9075_Dynamic_Aux_Services_V1.pdf
>
>
> It would be useful to support adding, removing, or updating auxiliary 
> services without requiring a restart of NMs.



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