Jian He commented on YARN-3100:

bq. The authorize.* package in common provides services some pretty generic ACL 
As I said, YARN *is already re-using many code/library from this package*. If 
you found more should be re-used, please let us know and feel free to file 
separate jira.
bq. Mentioning Ranger and/or Sentry should allow anyone to do anything they 
want. They are magic words that make people run away.
This is anyways configurable by admin. People can choose to use or not to use. 
Nothing gets affected for original implementation.

> Make YARN authorization pluggable
> ---------------------------------
>                 Key: YARN-3100
>                 URL: https://issues.apache.org/jira/browse/YARN-3100
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-3100.1.patch, YARN-3100.2.patch
> The goal is to have YARN acl model pluggable so as to integrate other 
> authorization tool such as Apache Ranger, Sentry.
> Currently, we have 
> - admin ACL
> - queue ACL
> - application ACL
> - time line domain ACL
> - service ACL
> The proposal is to create a YarnAuthorizationProvider interface. Current 
> implementation will be the default implementation. Ranger or Sentry plug-in 
> can implement  this interface.
> Benefit:
> -  Unify the code base. With the default implementation, we can get rid of 
> each specific ACL manager such as AdminAclManager, ApplicationACLsManager, 
> QueueAclsManager etc.
> - Enable Ranger, Sentry to do authorization for YARN. 

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