[jboss-jira] [JBoss JIRA] Commented: (JBMESSAGING-1173) Merge after lost of network connectivity between cluster members (handle the split-brain situation)

[Tim Fox (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBMESSAGING-1173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12447729#action_12447729 ] 

Tim Fox commented on JBMESSAGING-1173:
--------------------------------------

For JBM 2.0 we can allow to specify a quorum size in the cluster config.

When a connection fails over, the node will try to contact up to quorum number of members - if it succeeds then it will assume responsibility as live, otherwise it will doom itself as a network partition occurred.

> Merge after lost of network connectivity between cluster members (handle the split-brain situation)
> ---------------------------------------------------------------------------------------------------
>
>                 Key: JBMESSAGING-1173
>                 URL: https://jira.jboss.org/jira/browse/JBMESSAGING-1173
>             Project: JBoss Messaging
>          Issue Type: Feature Request
>          Components: JMS Clustering
>    Affects Versions: 1.4.0.SP2
>         Environment: Any clustered
>            Reporter: Mike Clark
>            Assignee: Tim Fox
>             Fix For: 2.0.0 Beta
>
>
> JBM does not currently support the merging of cluster segments that have gotten into the "split-brain" situation.  This occurs when network connectivity is lost between subsets of a cluster.  Each subset assumes the other is gone and acts appropriately.  When the network connectivity is restored, they do not merge back into a single cluster but remain as independent clusters (the spit-brain).
> This feature request is to add cluster merging to prevent the split-brain situation.

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