Hi, I've the requirement, that I need configurable cluster node names. These names should be unique inside the cluster, new nodes with already existing node names inside the cluster should be rejected to joind the cluster and should fail at startup with an appropiate exception. Additional, because I need these names in case of view events, something like CacheManager.getNodeName(Address address) Its a bit tricky to realise that using only the ISPN API, so I'd prefer that could be done inside ISPN. Is this change request possible for 5.2? What o you think?

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?

On 04.05.2012 13:09, Bela Ban wrote: > Why wouldn't you merge sub-clusters back into one cluster ? Are you > going to leave the cluster split forever ? > When multiple nodes leaving at the same time, the nodes inside the smaller part are shut down.