[jira] [Updated] (HADOOP-13808) replace `Can't get Master Kerberos principal` message with useful information about principal and configuration item

["Shilun Fan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-13808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shilun Fan updated HADOOP-13808:
--------------------------------
    Target Version/s: 3.5.0  (was: 3.4.0)

> 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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