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https://issues.apache.org/jira/browse/HADOOP-15996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16725480#comment-16725480
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Eric Yang edited comment on HADOOP-15996 at 12/20/18 7:10 PM:
--------------------------------------------------------------
The failed test doesn't seem like related to 001 patch. The feature works same
as HADOOP-12751. I will let others comment if ACL check needs to be applied as
part of this JIRA to block unauthorized kerberos principals.
was (Author: eyang):
The failed test doesn't seem like related to 001 patch. The feature works same
as HADOOP-12751. I will let others comment if ACL check needs to be applied as
part of this JIRA to block unauthorized kerberos principals. I don't mind to
commit the current form (with checkstyle fix), if this is holding up Hadoop
3.2.0 release.
> 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-Simple-trial-of-using-krb5.conf-for-auth_to_local-ru.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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