Thanks Madhan, that is helpful.

The scenario that is confusing me is this... I defined a policy for a
resource, lets say "resource1", and I add "admin" user with "read"
permission.

Then I make an access request for "resource1" as the "admin" user for an
action type of "write" (different action from policy above).

This returns isAccessDetermined false and isAllowed false, which as you
described means "Access not-determined".

Why is isAccessDetermined false in this case? I thought this would have
been isAccessDetermined true and isAllowed false because of the action not
matching the permission.

Thanks,

Bryan



On Thu, Apr 7, 2016 at 5:48 PM, Madhan Neethiraj <[email protected]> wrote:

> Bryan,
>
> Ranger policy model has been updated to be able to actively deny access.
> This enhancement is already in the master and will be included in the next
> release - ranger-0.6.
>
> When an access is denied by Ranger, RangerAccessResult will have:
> isAccessDetermined=true; isAllowed=false.
>
>
> Here are the possible combinations:
>   --------------------------------------------------------------
>   | # | isAccessDetermined | isAllowed |  Comment               |
>   |------------------------|-----------|------------------------|
>   | 1 |   True             |  True     |  Access Allowed        |
>   |------------------------------------|------------------------|
>   | 2 |   False            |  False    |  Access not-determined |
>
>   |------------------------------------|------------------------|
>   | 3 |   True             |  False    |  Access Denied         |
>   |------------------------------------|------------------------|
>   | 4 |   False            |  True     |  Invalid result        |
>   --------------------------------------------------------------
>
>
>
>
> In case of #2, the components can choose to:
>  - deny the access: this is done by Hive, Storm, Knox
>  - fallback to native access-control: this is done by HDFS, YARN
>
>
> #4 is an invalid combination and this will not be returned by Ranger.
>
> Hope this helps.
>
> Madhan
>
> On 4/7/16, 1:21 PM, "Bryan Bende" <[email protected]> wrote:
>
> >Hello,
> >
> >What does isAccessDetermined mean on RangerAccessResult?
> >
> >From testing it seems like isAccessDetermined and isAllowed will both be
> >true when the user has access to the resource, and then they will both be
> >false in other cases.
> >
> >Is there ever a case where isAllowed is false, and isAccessDetermined is
> >true?
> >
> >Thanks,
> >
> >Bryan
>
>

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