Chris Nauroth created HADOOP-19401:
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Summary: Improve error message when OS can't identify the current
user.
Key: HADOOP-19401
URL: https://issues.apache.org/jira/browse/HADOOP-19401
Project: Hadoop Common
Issue Type: Improvement
Components: security
Affects Versions: 3.4.1, 3.3.6, 3.3.4
Reporter: Chris Nauroth
Assignee: Chris Nauroth
Under simple auth, UGI identifies the current Hadoop user as the OS user. If
the OS can't determine the user, then they receive a cryptic
{{KerberosAuthException}}, even though Kerberos auth isn't really configured.
I've seen this come up for Hadoop processes launched in Docker containers that
accidentally specify a UID that's not actually present in the image. We can
improve this error so that users have a better understanding of how to fix the
problem.
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