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Date: Fri, 20 Nov 2009 14:15:52 -0800 (PST)
From: "Bruce Snyder (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Updated: (AMQ-869) provide a broker-to-broker
 synchronization protocol so that an old master can be brought back online
 and synchronize up with a slave (which is running as a master) or to bring
 an old slave back online
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     [ https://issues.apache.org/activemq/browse/AMQ-869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bruce Snyder updated AMQ-869:
-----------------------------

    Fix Version/s:     (was: AGING_TO_DIE)
                   5.4.0

> provide a broker-to-broker synchronization protocol so that an old master can be brought back online and synchronize up with a slave (which is running as a master) or to bring an old slave back online
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-869
>                 URL: https://issues.apache.org/activemq/browse/AMQ-869
>             Project: ActiveMQ
>          Issue Type: New Feature
>          Components: Broker
>            Reporter: James Strachan
>             Fix For: 5.4.0
>
>
> We basically need 2 brokers to compare their current state and ensure they are both in exactly the same state.
> e.g.
> * both brokers checkpoint
> * they perform a database merge
> * they can now continue being a master-slave pair
> Maybe the easiest implementation is to find the list of all unique message producers then perform a 'sequence-range' comparison.
> e.g.
> broker1:
> producer1: 1-100, 102-142, 145
> ...
> broker2:
> producer1: 1-12
> then we send from broker1 to broker2 producer1: 13-100, 102-142, 145

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