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https://issues.apache.org/jira/browse/HADOOP-13808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17803024#comment-17803024
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Shilun Fan commented on HADOOP-13808:
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Bulk update: moved all 3.4.0 non-blocker issues, please move back if it is a
blocker. Retarget 3.5.0.
> 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
> Components: security
> Affects Versions: 2.7.3
> Reporter: Steve Loughran
> Priority: Major
>
> 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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