You can subscribe to merge events if you want to implement the merging yourself i.e. if you use the clustering framework for your own mbeans.
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of David Klimek > Sent: jeudi, 27. mars 2003 12:36 > To: [EMAIL PROTECTED] > Subject: [JBoss-dev] Partition merge and service state merge algorithm > > > Hello, > > I'm looking for correct algorithm, that merges states of some > clustered > service when parition merge occurs. > > Consider following scenario: > 1. Running 8 node cluster > 2. Added key "name" with value="beforesplit" into state (state is > replicated across all nodes of cluster) > 3. Because of network failure cluster is splited into two > groups (each > with 4 nodes) > 4. On first group key "name" is modified to value "groupone" > 5. On second group key "name" is modified to value "grouptwo" > 6. Network is recovered. Cluster partion merge occurs. > > After merge all nodes should have one value for key "name" but which > value? (groupone, grouptwo, beforesplit) or exception should > be raised? > > If we drop one value, what if already this value was used in some > computation or output and simple drop will cause inconsistent > behavior? > > > Current JBoss clustering services doesn't throw light at it now. > DistributedStateService doesn't handle partion merge at all and > DistributedReplicaManager simply drops one of values when there are > differend values for one key. > > Thank you for any thoughts > > David Klimek > > -- > http://www.sweb.cz/david.klimek > > > > ------------------------------------------------------- > This SF.net email is sponsored by: > The Definitive IT and Networking Event. Be There! > NetWorld+Interop Las Vegas 2003 -- Register today! > http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en > _______________________________________________ > Jboss-development mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-development > ------------------------------------------------------- This SF.net email is sponsored by: The Definitive IT and Networking Event. Be There! NetWorld+Interop Las Vegas 2003 -- Register today! http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
