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Date: Sat, 10 Aug 2013 11:33:59 +0000 (UTC)
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Subject: [jira] [Commented] (HADOOP-9789) Support server advertised kerberos
 principals
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    [ https://issues.apache.org/jira/browse/HADOOP-9789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13735864#comment-13735864 ] 

Hudson commented on HADOOP-9789:
--------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #1487 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1487/])
HADOOP-9789. Support server advertised kerberos principals (daryn) (daryn: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1512380)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslRpcClient.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SaslRpcServer.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestSaslRPC.java

                
> Support server advertised kerberos principals
> ---------------------------------------------
>
>                 Key: HADOOP-9789
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9789
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: ipc, security
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>             Fix For: 3.0.0, 2.1.1-beta
>
>         Attachments: HADOOP-9789.patch, HADOOP-9789.patch
>
>
> The RPC client currently constructs the kerberos principal based on the a config value, usually with an _HOST substitution.  This means the service principal must match the hostname the client is using to connect.  This causes problems:
> * Prevents using HA with IP failover when the servers have distinct principals from the failover hostname
> * Prevents clients from being able to access a service bound to multiple interfaces.  Only the interface that matches the server's principal may be used.
> The client should be able to use the SASL advertised principal (HADOOP-9698), with appropriate safeguards, to acquire the correct service ticket.

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