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From "Christopher Tubbs (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-1024) Deprecate built-in user management utilities
Date Wed, 27 Feb 2013 01:19:13 GMT


Christopher Tubbs commented on ACCUMULO-1024:

Oh, I see. That might be a useful Authenticator implementation, because it's easy to use.
However, it's not very secure (it'd probably have to be stored in HDFS or some other shared
location), and I wouldn't want to provide an implementation I wouldn't recommend.

However, I would be interested in looking at how they do authentication in their code (I think
they use JAAS LoginContext, with a PasswordCallback that reads this file), because that might
be useful for us to adopt in the future, on the server side. However, it doesn't resolve the
issues with the client side, because even LoginContext has the issue of how to get the credentials
to the CallbackHandler's respective Callbacks on the server side.

With the generic token handling, we're essentially supporting single sign-on (SSO)... however
the SSO tokens are authenticated, we need to pass them to the server.
> Deprecate built-in user management utilities
> --------------------------------------------
>                 Key: ACCUMULO-1024
>                 URL:
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: master, tserver
>            Reporter: Christopher Tubbs
>            Assignee: Christopher Tubbs
>             Fix For: 1.5.0
> The built-in user management functionality should be phased out, in favor of the pluggable
authentication model. Any user-management functions that apply to a particular implementation
of an authentication should be handled within that implementation, and not within Accumulo's
> This should reduce the complexity of the overall user model.
> A transition plan should be established for the prior ZKAuthenticator implementation
for usernames and passwords. The former APIs for user management should continue to work as
is, and pass through to the former implementation, but any new APIs for user management should
not be introduced to the core (like in SecurityOperations, the shell, and 'accumulo init'),
because that introduces complexity and essentially establishes a guarantee that Accumulo will
handle user management for arbitrary authentication systems... which I don't think we can
do generically.

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