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https://issues.apache.org/jira/browse/YARN-10754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18020508#comment-18020508
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ASF GitHub Bot commented on YARN-10754:
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github-actions[bot] closed pull request #7297: YARN-10754. RM Renew Delegation 
token thread should timeout and retry should also consider app new submitted
URL: https://github.com/apache/hadoop/pull/7297




> RM Renew Delegation token thread should timeout and retry should also 
> consider app new submitted.
> -------------------------------------------------------------------------------------------------
>
>                 Key: YARN-10754
>                 URL: https://issues.apache.org/jira/browse/YARN-10754
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Qi Zhu
>            Assignee: Qi Zhu
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: YARN-10754.001.patch, image-2021-04-27-11-38-29-162.png
>
>
> As  YARN-9768 described:
> Delegation token renewer thread in RM (DelegationTokenRenewer.java) renews 
> HDFS tokens received to check for validity and expiration time.
> This call is made to an underlying HDFS NN or Router Node (which has exact 
> APIs as HDFS NN). If one of the nodes is bad and the renew call is stuck the 
> thread remains stuck indefinitely. The thread should ideally timeout the 
> renewToken and retry from the client's perspective.
> But it only consider the app recovery, not consider the app submitted:
> !image-2021-04-27-11-38-29-162.png|width=516,height=428!
> It will cause the app submitted not retry, when renew token (HDFS Namenode/ 
> Router) timeout. 



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