Steve Loughran created HADOOP-12742:
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Summary: pull out logic to determine principal, allow kdiag to get
at it directly
Key: HADOOP-12742
URL: https://issues.apache.org/jira/browse/HADOOP-12742
Project: Hadoop Common
Issue Type: Sub-task
Components: security
Affects Versions: 2.8.0
Reporter: Steve Loughran
The process for determining the principal name on a login is convoluted, and
can behave differently across JVMs. If it's playing up, it's hard to work out
what is up.
I propose
# pull out the code to something accessible by kdiag
# have it return the principal, and a string describing the origin of the
principal (env var, canonical principal, JVM introspection). This can be logged
and validated in KDiag, logged @ debug and used in UGI
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