Any plan to decouple TF-PS and distributed graph engine？

[fff-2013]

In the current implementation，client and server of graph co-place with TF-worker and TF-parameter-server.

When I want to use one TF-worker to train and multiple workers to sample data simultaneously(for GPU training). There will be some restrictions under the current architecture. So, any plan to decouple TF-PS and distributed graph engine to make architecture more flexible?

[jackonan]

Good suggestion and the solution is coming.