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From "Miroslav Novak (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARTEMIS-473) Resolve split brain data after split brains scenarios.
Date Thu, 11 Aug 2016 12:20:20 GMT

    [ https://issues.apache.org/jira/browse/ARTEMIS-473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15417115#comment-15417115
] 

Miroslav Novak commented on ARTEMIS-473:
----------------------------------------

This feature request should handle options a) and b). c) requires to resolve hard issues which
is out of scope. 

> 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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