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https://issues.apache.org/jira/browse/HADOOP-15996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16731083#comment-16731083
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Elek, Marton commented on HADOOP-15996:
---------------------------------------
I uploaded again the number 10 patch as 11 without any modification to test the
git url migration. (This was the most recent, good patch.)
Sorry for the additional noise (an additional precommit report is expected here
soon...)
> Plugin interface to support more complex usernames in Hadoop
> ------------------------------------------------------------
>
> Key: HADOOP-15996
> URL: https://issues.apache.org/jira/browse/HADOOP-15996
> Project: Hadoop Common
> Issue Type: New Feature
> Components: security
> Reporter: Eric Yang
> Assignee: Bolke de Bruin
> Priority: Major
> Attachments: 0001-HADOOP-15996-Make-auth-to-local-configurable.patch,
> 0001-Make-allowing-or-configurable.patch,
> 0001-Simple-trial-of-using-krb5.conf-for-auth_to_local-ru.patch,
> 0002-HADOOP-15996-Make-auth-to-local-configurable.patch,
> 0003-HADOOP-15996-Make-auth-to-local-configurable.patch,
> 0004-HADOOP-15996-Make-auth-to-local-configurable.patch,
> 0005-HADOOP-15996-Make-auth-to-local-configurable.patch,
> HADOOP-15996.0005.patch, HADOOP-15996.0006.patch, HADOOP-15996.0007.patch,
> HADOOP-15996.0008.patch, HADOOP-15996.0009.patch, HADOOP-15996.0010.patch,
> HADOOP-15996.0011.patch
>
>
> Hadoop does not allow support of @ character in username in recent security
> mailing list vote to revert HADOOP-12751. Hadoop auth_to_local rule must
> match to authorize user to login to Hadoop cluster. This design does not
> work well in multi-realm environment where identical username between two
> realms do not map to the same user. There is also possibility that lossy
> regex can incorrectly map users. In the interest of supporting multi-realms,
> it maybe preferred to pass principal name without rewrite to uniquely
> distinguish users. This jira is to revisit if Hadoop can support full
> principal names without rewrite and provide a plugin to override Hadoop's
> default implementation of auth_to_local for multi-realm use case.
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