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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11628) SPNEGO auth does not work with CNAMEs in JDK8
Date Tue, 24 Feb 2015 20:44:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14335412#comment-14335412

Allen Wittenauer commented on HADOOP-11628:

Win 2k does, Win 2k3 does not, based upon https://technet.microsoft.com/en-us/library/cc772815%28v=ws.10%29.aspx

Ugh:  http://stackoverflow.com/questions/12229658/java-spnego-unwanted-spn-canonicalization

If you follow the thread mentioned, gives more details on why this is a bad deployment strategy.
 So I'm thinking this should probably be a runtime option with a default of off.

> SPNEGO auth does not work with CNAMEs in JDK8
> ---------------------------------------------
>                 Key: HADOOP-11628
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11628
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.6.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>              Labels: jdk8
>         Attachments: HADOOP-11628.patch
> Pre-JDK8, GSSName auto-canonicalized the hostname when constructing the principal for
SPNEGO.  JDK8 no longer does this which breaks the use of user-friendly CNAMEs for services.

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