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https://issues.apache.org/jira/browse/YARN-8404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sunil Govindan updated YARN-8404:
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Priority: Blocker (was: Critical)
> RM Event dispatcher is blocked if ATS1/1.5 server is not running.
> ------------------------------------------------------------------
>
> Key: YARN-8404
> URL: https://issues.apache.org/jira/browse/YARN-8404
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 3.1.0, 3.0.2
> Reporter: Rohith Sharma K S
> Assignee: Rohith Sharma K S
> Priority: Blocker
> Attachments: YARN-8404.01.patch
>
>
> It is observed that if ATS1/1.5 daemon is not running, RM recovery is delayed
> as long as timeline client get timed out for each applications. By default,
> timed out will take around 5 mins. If completed applications are more then
> amount of time RM will wait is *(number of completed applications in a
> cluster * 5 minutes)* which is kind of hanged.
> Primary reason for this behavior is YARN-3044 YARN-4129 which refactor
> existing system metric publisher. This refactoring made appFinished event as
> synchronous which was asynchronous earlier.
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