Steve Loughran created YARN-9109:
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Summary: DelegationTokenRenewer not resilient to token classload
problems
Key: YARN-9109
URL: https://issues.apache.org/jira/browse/YARN-9109
Project: Hadoop YARN
Issue Type: Bug
Components: resourcemanager
Affects Versions: 3.1.2
Reporter: Steve Loughran
The DelegationTokenRenewer can't handle the situation of: token implementation
class cannot be instantiated.
This is because {{Token.decodeIdentifier()}} throws an RTE on failure to
instantiate, and these aren't caught.
Appears to surfaces in the client: with an error about "Timer Already
Cancelled". In the logs, you see this
{code}
Exception: java.lang.NoClassDefFoundError thrown from the
UncaughtExceptionHandler in thread "Timer-5"
{code}
At least, I'm assuming this is the cause.... Relates to HADOOP-14556
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