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https://issues.apache.org/jira/browse/HADOOP-11117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14143947#comment-14143947
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Allen Wittenauer commented on HADOOP-11117:
-------------------------------------------
I really wish we could catch these and not throw a stack trace to figure out
why/what/where it broke. From an end user perspective, these stacks are
completely unfriendly.
> UGI HadoopLoginModule doesn't catch & wrap all kerberos-related exceptions
> --------------------------------------------------------------------------
>
> Key: HADOOP-11117
> URL: https://issues.apache.org/jira/browse/HADOOP-11117
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.5.1
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Minor
> Fix For: 2.6.0
>
> Attachments: HADOOP-11117-001.patch
>
>
> If something is failing with kerberos login,
> {{UserGroupInformation.loginUserFromKeytabAndReturnUGI()}} should fail with
> useful information. But not all exceptions from the inner code are caught and
> converted to LoginException. Those exceptions that aren't wrapped have their
> text and stack trace lost somewhere in the javax code, leaving on the text
> "login failed" and a stack trace of no value whatsoever.
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