On 14 March 2017 at 13:53, Dan Berindei <dan.berin...@gmail.com> wrote: > Isn't this a lot like x-site state transfer?
Indeed! Does it mean we could have such a feature with less work? Maybe some kind of "x-site for dummies" quickstart would be enough, but re-framing the use case. Thanks, Sanne > > Dan > > On Tue, Mar 14, 2017 at 3:08 PM, Sanne Grinovero <sa...@infinispan.org> wrote: >> Just throwing out an idea I just had while thinking of Hibernate OGM >> user needs for data migration. >> >> For people using databases & related frameworks, it's common to have a >> staging database which contains not just the staging "schema" but also >> data. When legally possible, it's often preferable to have snapshot >> from production data. >> >> For example last time I worked with a SQL database, each week I'd take >> a production backup and restore it on both our staging environment and >> on the developer's instances so that everyone could run tests on it - >> without needing access to the real production. >> >> Interestingly, while we don't have an easy tool get a fully consistent >> snapshot from a live Infinispan grid, "replicating" should be a >> familiar concept here? >> >> Infinispan could have a "mitosis" feature, like cell reproduction, in >> which the user connects a pristine grid instance of N nodes and these >> N nodes automatically become non-primary owners for the full set of >> segments - this could happen via a custom hash which makes them all >> backup replicas (no main owners) and then Infinispan would be able to >> tell when state transfer is completed, and initiate some some >> coordination to sever the link without triggering re-hash on the >> original "production" grid. >> >> Incidentally, while this happens the child datagrid would be kept up >> to date with in-flight changes, so we could envision either a very >> short lock on changes to guarantee a fully consistent snapshot, or not >> have any lock at all but minimise the inconsistencies to those which >> might happen during the link decoupling. >> >> Maybe this would satisfy also the people who've been asking for the >> snapshot feature? I don't think people want a snapshot for the sake of >> it, but to replicate the grid.. >> >> I realise it's not a 1 day of work and the idea is not fully fleshed >> out, but I think this would be a very well received feature. >> >> >> Thanks, >> Sanne >> _______________________________________________ >> 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 _______________________________________________ infinispan-dev mailing list infinispan-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev
