Re: [infinispan-dev] Proposal: ISPN-1394 Manual rehashing in 5.2

On 31 January 2012 16:06, Bela Ban<bban(a)redhat.com> wrote: > This is essentially what I suggested at the Lisbon meeting, right ? Yes! > I think Dan had a design wiki on this somewhere... Just rising it here as it was moved to 6.0, while I think it deserves a dedicated thread to better think about it. If it's not hard, I think it should be done sooner. But while I started the thread to wake up the brilliant minds, I can't volunteer for this to make it happen. Sanne > > > On 1/31/12 4:53 PM, Sanne Grinovero wrote: >> I think this is an important feature to have soon; >> >> My understanding of it: >> >> We default with the feature off, and newly discovered nodes are >> added/removed as usual. With a JMX operatable switch, one can disable >> this: >> >> If a remote node is joining the JGroups view, but rehash is off: it >> will be added to a to-be-installed view, but this won't be installed >> until rehash is enabled again. This gives time to add more changes >> before starting the rehash, and would help a lot to start larger >> clusters. >> >> If the [self] node is booting and joining a cluster with manual rehash >> off, the start process and any getCache() invocation should block and >> wait for it to be enabled. This would need of course to override the >> usually low timeouts. >> >> When a node is suspected it's a bit a different story as we need to >> make sure no data is lost. The principle is the same, but maybe we >> should have two flags: one which is a "soft request" to avoid rehashes >> of less than N members (and refuse N>=numOwners ?), one which is just >> disable it and don't care: data might be in a cachestore, data might >> not be important. Which reminds me, we should consider as well a JMX >> command to flush the container to the CacheLoader. >> >> --Sanne >> _______________________________________________ >> infinispan-dev mailing list >> infinispan-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/infinispan-dev > > -- > Bela Ban > Lead JGroups (http://www.jgroups.org) > JBoss / Red Hat > _______________________________________________ > infinispan-dev mailing list > infinispan-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/infinispan-dev _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev