Hi, Sandesh. Thank you for reply.
One following question from second one, as far as I know we can give hints to deployment policies, but that is just hint and APEX decides the deployments. Is it right? If so, does it check current cluster states and deploy topologies? Thanks, Junguk 2016-06-29 16:55 GMT-04:00 Sandesh Hegde <[email protected]>: > 1. Not Netty but https://github.com/DataTorrent/Netlet > 2. Operators can be deployed in the same container or in different > containers and the containers can be in the same machine or in different > machines. > > Within Container: > Between the operators, it is either is a queue or function call. > (CONTAINER_LOCAL, THREAD_LOCAL) > Every container has a BufferServer, to communicate with downstream > operators. Communication between BufferServer and operators in > that container is local loop back.. > > Different Containers in the same machine -> Local loop back > Different Containers in different machines -> All bets are off. > > 3. Kryo - by default. Users can use different codec for different streams. > (take a look at StreamCodec) > > On Wed, Jun 29, 2016 at 12:55 PM Junguk Cho <[email protected]> wrote: > >> Hi, >> >> I have some questions for Apex architecture. >> Does it use netty for transport layer? >> In addition, if two operators are in different processes in one machine, >> does they use local TCP connection? >> >> Also does it use kryo serialziation for object between operators? >> >> >> Thanks in advance. >> Junguk >> >
