[infinispan-dev] Cluster wide node name uniqueness

[Bela Ban]

Why wouldn't you merge sub-clusters back into one cluster ? Are you 
going to leave the cluster split forever ?

On 5/4/12 8:22 AM, Thomas Fromm wrote:
> On 04.05.2012 07:27, Bela Ban wrote:
>> Unless you use UUIDs it's hard to guarantees name uniqueness. For
>> instance, if there was a JGroups protocol which - before joining - sent
>> a broadcast to all members, asking whether the name it picked was
>> unique, and then joined, it would still not guarantee uniqueness. For
>> instance, if we are in a partitioned state, then a name picked might be
>> unique, but when a merge ensued later, we might discover that some other
>> member in a different partition has the same name.
>
> Hm, yes. I forgot to mention, that this was one reason why I removed
> MERGE from my JGroups configuration.
> Maybe deny merge for this node in this case?


-- 
Bela Ban, JGroups lead (http://www.jgroups.org)