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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7254) Use new Globally Barriered Procedure mechanism to replace AccessController ZK-mediated permissions cache
Date Sun, 02 Dec 2012 02:07:58 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-7254:
----------------------------------

    Description: 
After HBASE-7212 goes in, we could tighten up the permissions cache using a barrier for grant
and revoke ops. We should consider replacing the current ZK watcher based permissions cache
"RPC via ZK" with this Procedure mechanism that provides much the same, but with the added
benefit that we can fail the grant or revoke op if one or more RSes fail to ack the update.

Currently if the local AccessController fails to update its permissions cache it will kill
the RS. Using the 

  was:
After HBASE-7212 goes in, we could tighten up the permissions cache using a barrier for grant
and revoke ops. We should consider replacing the current ZK watcher based permissions cache
"RPC via ZK" with this Procedure mechanism that provides much the same, but with the added
benefit that we can fail the grant or revoke op if one or more RSes fail to ack the update.

We are ok here too without 2PC because during the commit phase if the local AccessController
fails to update its permissions cache it will kill the RS. 

    
> Use new Globally Barriered Procedure mechanism to replace AccessController ZK-mediated
permissions cache 
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7254
>                 URL: https://issues.apache.org/jira/browse/HBASE-7254
>             Project: HBase
>          Issue Type: Task
>          Components: Coprocessors, security
>    Affects Versions: 0.96.0
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>
> After HBASE-7212 goes in, we could tighten up the permissions cache using a barrier for
grant and revoke ops. We should consider replacing the current ZK watcher based permissions
cache "RPC via ZK" with this Procedure mechanism that provides much the same, but with the
added benefit that we can fail the grant or revoke op if one or more RSes fail to ack the
update.
> Currently if the local AccessController fails to update its permissions cache it will
kill the RS. Using the 

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