Re: Programmatically invalidate cache of Ranger plugins

[Matteo Alessandroni]

Hi Bosco,

well in general my flow is the following:
 * push policies to Ranger via REST API
 * those policies should be synced via the plugin (e.g. HIVE) right
   after the push

So I don't want the Ranger plugin cache to act in this case, so I want 
to invalidate it right "before" pushing new policies so that those new 
policies will be soon synced to plugin and so be valid for the resource 
(e.g. HIVE).

Matteo


On 26/06/19 13:22, Don Bosco Durai wrote:

Shouldn’t you be first making the REST API call and then invalidate 
the cache, so that you get the latest?

I feel, Abhay’s API should solve your use case, unless I got it wrong.

Bosco

*From: *Matteo Alessandroni <skylar...@apache.org>
*Reply-To: *<user@ranger.apache.org>
*Date: *Wednesday, June 26, 2019 at 12:58 PM
*To: *<user@ranger.apache.org>
*Subject: *Re: Programmatically invalidate cache of Ranger plugins

Hi Abhay,

thanks for the info!
That logic just downloads the latest policies and tags but it does not 
invalidate cache, right? My problem is that when I try to push new 
policies via REST API the plugin keeps previous cached policies and 
does not replace those with new ones so in that case I need to first 
invalidate cache and then push new policies.

Regards,
Matteo

On 25/06/19 23:11, Abhay Kulkarni wrote:

    https://issues.apache.org/jira/browse/RANGER-2349 provides a way
    to download policies (and tags) on demand. Ranger plugin code may
    call RangerBasePlugin.refreshPoliciesAndTags() API to get the
    latest policies and tags.

    Thanks,

    -Abhay

    On Tue, Jun 25, 2019 at 9:11 AM Don Bosco Durai <bo...@apache.org
    <mailto:bo...@apache.org>> wrote:

        You want to shorten the refresh time or explicitly trigger
        cache invalidate? The former is easy and there is a property
        to do it.

        Bosco

        *From: *Matteo Alessandroni <skylar...@apache.org
        <mailto:skylar...@apache.org>>
        *Reply-To: *<user@ranger.apache.org
        <mailto:user@ranger.apache.org>>
        *Date: *Tuesday, June 25, 2019 at 8:45 PM
        *To: *"user@ranger.apache.org <mailto:user@ranger.apache.org>"
        <user@ranger.apache.org <mailto:user@ranger.apache.org>>
        *Subject: *Programmatically invalidate cache of Ranger plugins

        Hi,

        is there a way to programmatically refresh cache of a Ranger
        plugin?
        I'm talking about the part related to [1].

        Thanks.
        Best regards,
        Matteo


        [1] http://community.hortonworks.com/answers/66604/view.html