CR Hota created YARN-9768:
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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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