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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-4416) MAC failures when running on host configured with mixed-case hostname
Date Fri, 19 Aug 2016 22:37:21 GMT
Josh Elser created ACCUMULO-4416:
------------------------------------

             Summary: 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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