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https://issues.apache.org/jira/browse/HADOOP-6647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886952#action_12886952
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Owen O'Malley commented on HADOOP-6647:
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Allen,
The Namenode's configuration defines the mapping from long names to short
names. It defaults to:
*[email protected] -> *
With that mapping, someone coming in from another domain will fail, even with
the cross-realm stuff set up.
[email protected] fails....
At Yahoo, we have two domains and we have rules for exactly how they map, but
they amount to:
*[email protected] -> *
*[email protected] -> *
So those two realms work, but anything else will fail. Depending on the
translation that operations defines, they *can* make a cluster insecure.
[email protected] -> root
would be really convenient for joe, but not secure. *grin*
> balancer fails with "is not authorized for protocol interface
> NamenodeProtocol" in secure environment
> -----------------------------------------------------------------------------------------------------
>
> Key: HADOOP-6647
> URL: https://issues.apache.org/jira/browse/HADOOP-6647
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Boris Shkolnik
> Assignee: Boris Shkolnik
> Attachments: HADOOP-6647-BP20.patch, HADOOP-6647.patch
>
>
> user logs in as hdfs/someth...@something and tries to run balancer.
> balancer is using NameNode Protocol which authorizes based on server
> principal key.
> but NameNode key is hdfs/_h...@.. now. so it fails.
> To fix we need to compare the short names only.
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