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https://issues.apache.org/jira/browse/ARTEMIS-473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15432755#comment-15432755
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Miroslav Novak commented on ARTEMIS-473:
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[~clebertsuconic] do you think that options a) and b) are feasible? Option c)
would require to resolve hard issues and merge the journals as you mentioned
above which would be out of scope for this RFE.
> 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
> 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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