Jim Brennan created HADOOP-17342:
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Summary: Creating a token identifier should not do kerberos name
resolution
Key: HADOOP-17342
URL: https://issues.apache.org/jira/browse/HADOOP-17342
Project: Hadoop Common
Issue Type: Improvement
Components: common
Affects Versions: 2.10.1, 3.4.0
Reporter: Jim Brennan
This problem was found and fixed internally for us by [~daryn].
Creating a token identifier tries to do auth_to_local short username
translation. The authentication process creates a blank token identifier for
deserializing the wire format. Attempting to resolve an empty username is
useless work.
Discovered the issue during fair call queue backoff testing. The readers are
unnecessary slowed down by this bug.
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