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Posted to dev@qpid.apache.org by "Alan Conway (JIRA)" <ji...@apache.org> on 2013/04/03 16:13:15 UTC

[jira] [Commented] (QPID-3603) New approach to HA

    [ https://issues.apache.org/jira/browse/QPID-3603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13620944#comment-13620944 ] 

Alan Conway commented on QPID-3603:
-----------------------------------

Documentation for new HA is in qpid/doc/book/src/cpp-broker
                
> New approach to HA
> ------------------
>
>                 Key: QPID-3603
>                 URL: https://issues.apache.org/jira/browse/QPID-3603
>             Project: Qpid
>          Issue Type: Improvement
>          Components: C++ Clustering
>    Affects Versions: 0.14
>            Reporter: Alan Conway
>            Assignee: Alan Conway
>             Fix For: 0.17
>
>
> The existing cluster code suffers from some maintainability and performance problems. This is a proposal to write a new HA solution based on the "replicating subscription" that will replace the current cluster. This is a competing proposal to QPID-2920.
> Summary: a "replicating subscription" is a special queue browser that can see acquired and un-acquired messages and also receives dequeue events to replicate remote queue contents. The new HA solution will create & manage these subscriptions in order to maintain a back-up of a primary broker on one or more back-up brokers. This is an active-passive hot-standby configuration, where exactly one broker is primary and the others are secondary. Initially plan is to use Cluster Suite's rgmanager to enforce the roles and manage fail-over, but we could support other cluster resource managers (e.g. PaceMaker) in the future.

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