[ 
http://jira.jboss.com/jira/browse/JBAS-1476?page=comments#action_12315474 ]
     
Bela Ban commented on JBAS-1476:
--------------------------------

// 1) At cluster formation (first node in cluster), create a cluster instance 
GUID

Yes

// 2) At cluster join (second+ node in cluster) get the GUID from the 
coordinator

I don't think we need to consult the coordinator, because we don't need the 
GUID part to be the same across the cluster (see my other comment).


// 3) Include this GUID in cluster view keys, i.e. 
GUID/DefaultPartition/HAJNDI/1

Yes

> Need to include a notion of cluster instance in the cluster view
> ----------------------------------------------------------------
>
>          Key: JBAS-1476
>          URL: http://jira.jboss.com/jira/browse/JBAS-1476
>      Project: JBoss Application Server
>         Type: Bug
>   Components: Clustering
>     Versions: JBossAS-4.0.1 Final,  JBossAS-3.2.7 Final,  JBossAS-4.0.1 SP1
>     Reporter: Adrian Brock
>     Priority: Critical

>
>
> We need to include a notion of cluster instance in the cluster view id
> to avoid at least the following scenario:
> Client serializes a handle to a cluster which is at cluster view 22
> Handle contains key DefaultPartition/HAJNDI/22
> The cluster is totally restarted meaning the view reverts back to one.
> The client now has a view id
> DefaultPartition/HAJNDI/1
> The client deserializes the handle, which will overwrite the correct cluster
> view with the old invalid view.
> ----
> This will also avoid the problem where a client talks to different clusters
> with the same partition name.
> ----
> Proposed solution:
> 1) At cluster formation (first node in cluster), create a cluster instance 
> GUID
> 2) At cluster join (second+ node in cluster) get the GUID from the coordinator
> 3) Include this GUID in cluster view keys, i.e.
> GUID/DefaultPartition/HAJNDI/1

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