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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2012/12/02 03:05:58 UTC

[jira] [Updated] (HBASE-7254) Use new Globally Barriered Procedure mechanism to replace AccessController ZK-mediated permissions cache

     [ 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.

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. 

  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.

    
> 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.
> 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. 

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