Justin Bertram reopened ARTEMIS-473:

> Resolve split brain data after split brains scenarios.
> ------------------------------------------------------
>                 Key: ARTEMIS-473
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-473
>             Project: ActiveMQ Artemis
>          Issue Type: New Feature
>          Components: Broker
>    Affects Versions: 1.2.0
>            Reporter: Miroslav Novak
>            Assignee: clebert suconic
>            Priority: Critical
> If master-slave pair is configured using replicated journal and there are no 
> other servers in cluster then if network between master and slave is broken 
> then slave will activate. Depending on whether clients were disconnected from 
> master or not there might be or might not be failover to slave. Problem 
> happens in the moment when network between master and slave is restored. 
> Master and slave are active at the same time which is the split brain 
> syndrom. Currently there is no recovery mechanism to solve this situation.
> Suggested improvement: If clients failovered to slave then master will 
> restart itself so failback occurs (if configured). If clients did not 
> failover and stayed connected to master then backup will restart itself.

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