Steve Loughran created HADOOP-13808:
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Summary: replace `Can't get Master Kerberos principal` message
with useful information about principal and configuration item
Key: HADOOP-13808
URL: https://issues.apache.org/jira/browse/HADOOP-13808
Project: Hadoop Common
Issue Type: Sub-task
Reporter: Steve Loughran
Clients get the `Can't get Master Kerberos principal` error message when their
config doesn't identify the principal for a service.
This message is fairly useless as
# it doesn't identify the service for which a principal is sought
# it doesn't identify the configuration property looked for
# it doesn't provide any guidance of how to fix it
As a result, anyone seeing this doesn't have a clue what to do.
I propose
# naming the principal sought, e.g. "namenode", "YARN RM"
# naming the configuration item looked for
# adding a link to a wiki page covering the problem
KDiag should scan through the common set of principals if it doesn't already
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