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https://issues.apache.org/jira/browse/HADOOP-12754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15298353#comment-15298353
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Daryn Sharp commented on HADOOP-12754:
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The current message is accidentally accurate as currently implemented, and
patch doesn't change anything. {{handleSaslConnectionFailure}} is only called
when the real user is the login user. So the current user is the real user is
the login user.
> Client.handleSaslConnectionFailure() uses wrong user in exception text
> ----------------------------------------------------------------------
>
> Key: HADOOP-12754
> URL: https://issues.apache.org/jira/browse/HADOOP-12754
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: ipc, security
> Affects Versions: 2.7.2
> Reporter: Steve Loughran
> Priority: Minor
> Attachments: HADOOP-12754-001.patch
>
>
> {{Client.handleSaslConnectionFailure()}} includes the user in SASL failure
> messages, but it calls {{UGI.getLoginUser()}} for its text. If there's an
> auth problem in a {{doAs()}} context, this exception is fundamentally
> misleading
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