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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-4416) MAC failures when running on host configured with mixed-case hostname
Date Mon, 22 Aug 2016 19:48:21 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-4416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431486#comment-15431486
] 

Christopher Tubbs commented on ACCUMULO-4416:
---------------------------------------------

Oh, I see.

> MAC failures when running on host configured with mixed-case hostname
> ---------------------------------------------------------------------
>
>                 Key: ACCUMULO-4416
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4416
>             Project: Accumulo
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 1.7.1
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>            Priority: Minor
>
> HADOOP-7988
> Kerberos is case-sensitive. DNS is not. I saw a case where a host with mixed-case hostname
had a MAC instance that fell over because of a spam of failed RPCs that never succeeded.
> MiniKDC and our code seems to be doing the right thing, but somehow a lower-case on the
hostname we were using on the client to communicate with the tserver happened. I'm not sure
what component did this. Should look into this with some VM configured with a mixed-case hostname.



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