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From "CR Hota (Jira)" <j...@apache.org>
Subject [jira] [Created] (YARN-9768) RM Renew Delegation token thread should timeout and retry
Date Tue, 20 Aug 2019 20:49:00 GMT
CR Hota created YARN-9768:
-----------------------------

             Summary: RM Renew Delegation token thread should timeout and retry
                 Key: YARN-9768
                 URL: https://issues.apache.org/jira/browse/YARN-9768
             Project: Hadoop YARN
          Issue Type: Improvement
            Reporter: CR Hota


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.

 



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