On 05/13/2011 11:28 AM, Manik Surtani wrote: > So this is related to ISPN-360 which is currently titled "create > NodeJoinedEvent". > > Leaving names out for now, essentially, what we need is a notification to > inform listeners that (a) a JGroups ViewChange has been detected (b) a rehash > has started and (c) a rehash has completed. Possibly, being more > fine-grained, that (d) a new ConsistentHash view has been installed. Does > this cover it all? If so, how about: > > @ViewChanged (same as we have now) > @RehashStarted > @RehashComplete > @TopologyChanged // to reflect a new CH? > > Thoughts? Covers my requirements. With RehashComplete we would be able build a monitoring component that would enable us to wait until rehash is complete during the cluster scale-in phase.
m. > Cheers > Manik > > > > On 11 May 2011, at 13:29, Sanne Grinovero wrote: > >> First thing I thought when reading your email was "OMG do we support >> on-the-fly hash implementation changes? crazy!" >> >> That's obviously not the case, but if you name it as >> @ConsistenHashChangeListene that's what I would think. >> >> Wouldn't it be better to change the exact timing of the viewchange >> event? I don't see why Infinispan users might be more interested in >> knowing about the topology details according to the transport than >> what they are about the actual Infinispan hashing topology - I would >> expect that when I receive which notification the new view is already >> installed and ready to go; actually I thought that was the case since >> ever. >> >> What would be the use cases to get the notification *before* the new >> hash is installed? >> >> Cheers, >> Sanne >> >> 2011/5/11 Mircea Markus<mircea.mar...@jboss.com>: >>> Hi, >>> The basic problem behind this is that I need to be notified when a new >>> consistent hash is installed. >>> >>> ATM there isn't any support (of which I know) for a >>> "@ConsistenHashChangeListener". >>> >>> I'm thinking to add such notifications either: >>> a) internally: Observer pattern on DistributionManager or even on >>> DistributionManagerImpl >>> b) more generically, as a fully flagged listener. >>> >>> I favor a) and then if more people ask for it we will expose it as a fully >>> flagged listener. >>> >>> Suggestions? >>> >>> Cheers, >>> Mircea >>> >>> _______________________________________________ >>> infinispan-dev mailing list >>> infinispan-dev@lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/infinispan-dev >>> >> _______________________________________________ >> infinispan-dev mailing list >> infinispan-dev@lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/infinispan-dev > -- > Manik Surtani > ma...@jboss.org > twitter.com/maniksurtani > > Lead, Infinispan > http://www.infinispan.org > > > > > _______________________________________________ > infinispan-dev mailing list > infinispan-dev@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/infinispan-dev -- Michal Linhard Quality Assurance Engineer Red Hat Czech s.r.o. Purkynova 99 612 45 Brno, Czech Republic phone: +420 532 294 320 ext. 62320 mobile: +420 728 626 363 _______________________________________________ infinispan-dev mailing list infinispan-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev
