Re: [infinispan-dev] State transfer-related terms

Hi, I've started (again) working on ISPN-5021 [1], and I'd like to get some common agreement on few terms. So below I summarize my understanding (or misunderstanding) of these, please state you opinion, thinking a bit more generally. State transfer: whole process beginning with some ST-related event = node being detected to crash/sending join or leave request, and ending when this event is processed. When another event happens, the current ST can either be finished or canceled and then *another* ST can begin. State transfer is a cluster-wide process, though it cannot be started and ended absolutely simultaneously. Rebalance: one phase of ST, when the data transfer occurs. Data rehash: this is a bit painful point: we have DataRehashEvent where the name suggest that it is related rather to rebalance, but currently it fires when CacheTopology.getPendingCH() == null (that means when ST is complete), and the event itself also looks more like it should be fired at the end of state transfer. If we have something more to do after the rebalance, I am not sure how useful is firing that just because all data has been transferred (but for example before old data has been wiped out). Should I add another StateTransferEvent event (and appropriate listeners)? That would break the compatibility with tightly related implementations...

WDYT? Radim [1] https://issues.jboss.org/browse/ISPN-5021 -- Radim Vansa <rvansa(a)redhat.com&gt; JBoss Performance Team _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev