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https://issues.apache.org/jira/browse/YARN-9478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manikandan R resolved YARN-9478.
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Resolution: Duplicate
> Add timeout for renew delegation thread pool
> --------------------------------------------
>
> Key: YARN-9478
> URL: https://issues.apache.org/jira/browse/YARN-9478
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Affects Versions: 2.6.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Priority: Major
>
> Yarn by default creates a thread pool with 50 threads to handle all the token
> renewal for the running jobs. Currently there is no timeout for the threads
> so if there is one application is slowing to renew token, then eventually
> Yarn could run into the situation that all the threads are busy with renewing
> tokens for such application types and the whole Yarn cluster can't handle new
> applications.
> Propose to add timeout to the threads in the thread pool so the threads get
> killed after certain time.
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