Re: [infinispan-dev] ISPN-263 and handling partitions

On 23 Apr 2013, at 16:37, Bela Ban <bban(a)redhat.com&gt; wrote: > > > On 4/22/13 6:46 PM, Manik Surtani wrote: >> >> On 22 Apr 2013, at 16:46, Mircea Markus <mmarkus(a)redhat.com&gt; wrote: >> >>> would the read only partition be wiped out and repopulated during >>> merge? >> >> Naively, yes. But as Dan pointed out, if a key K only exists in the >> minor partition (primary and backups), then just wiping the minor >> partition nodes will result in data loss. >> >> A more sophisticated algorithm would just wipe keys in the minor >> partition that also exist in the major partition. > > > I think this would be good enough for a lot of scenarios. > > >> An *even* more sophisticated algorithm would only wipe keys in the >> minor partition that also exist in the major partition, that have >> changed since the partition occurred. Hence the vector clocks. > > Even better. What would you do in a conflict case ? Throw the conflict > at the user who has to resolve it ? Always prefer the data from the > primary partition ? Why would a conflict happen? Only the primary partition is allowed to update data after a split. - M -- Manik Surtani manik(a)jboss.org twitter.com/maniksurtani Platform Architect, JBoss Data Grid http://red.ht/data-grid _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev