Re: [infinispan-dev] Distributed execution framework - API proposal(s)

Hey, I spent the last week working on concrete API proposals for distributed execution framework. I believe that we are close to finalize the proposal and your input and feedback is important now! Here are the main ideas where I think we made progress since we last talked. Access to multiple caches during task execution While we have agreed to allow access to multiple caches during task execution including this logic into task API complicates it greatly. The compromise I found is to focus all API on to a one specific cache but allow access to other caches through DistributedTaskContext API. The focus on one specific cache and its input keys will allows us to properly CH map task units across Infinispan cluster and will cover most of the use cases. DistributedTaskContext can also easily be mapped to a single cache. See DistributedTask and DistributedTaskContext for more details. DistributedTask and DistributedCallable I found it useful to separate task characteristics in general and actual work/computation details. Therefore the main task characteristics are specified through DistributedTask API and details of actual task computation are specified through DistributedCallable API. DistributedTask specifies coarse task details, the failover policy, the task splitting policy, cancellation policy and so on while in DistributedCallable API implementers focus on actual details of a computation/work unit. I have updated the original document [1] to reflect API update. You can see the actual proposal in git here [2] and I have also included the variation of this approach [3] that separates map and reduce task phases with separate interfaces and removes DistributedCallable interaface. I have also kept Trustin's ideas in another proposal [4] since I would like to include them as well if possible. Regards, Vladimir [1] http://community.jboss.org/wiki/InfinispanDistributedExecutionFramework [2] https://github.com/vblagoje/infinispan/tree/t_ispn-39_master_prop1 [3] https://github.com/vblagoje/infinispan/tree/t_ispn-39_master_prop2 [4] https://github.com/vblagoje/infinispan/tree/t_ispn-39_master_prop3 _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev