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https://issues.apache.org/jira/browse/YARN-2000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14031080#comment-14031080
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Tsuyoshi OZAWA commented on YARN-2000:
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It sounds reasonable to me.

> Fix ordering of starting services inside the RM
> -----------------------------------------------
>
>                 Key: YARN-2000
>                 URL: https://issues.apache.org/jira/browse/YARN-2000
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Jian He
>            Assignee: Jian He
>
> The order of starting services in RM would be:
> - Recovery of the app/attempts
> - Start the scheduler and add scheduler app/attempts
> - Start ResourceTrackerService and re-populate the containers in scheduler 
> based on the containers info from NMs 
> - ApplicationMasterService either don’t start or start but block until all 
> the previous NMs registers.
> Other than these, there are other services like ClientRMService, Webapps 
> which we need to  think about the order too.



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