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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-15996) Plugin interface to support more complex usernames in Hadoop
Date Mon, 10 Dec 2018 22:17:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-15996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Yang updated HADOOP-15996:
-------------------------------
    Description: 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.  (was: 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 incorrect 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.)

> 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
>            Priority: Major
>
> 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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