tree 7a9f3c33047ba15021dee0cf7a959a6b1d13dae6
parent d89dda8003aee52b4ae0eeab1928ceef6ce2a7c2
author Haoyu Zhang <haoyuzhang@google.com> 1573000642 -0800
committer TensorFlower Gardener <gardener@tensorflow.org> 1573003479 -0800

Reuse existing rendezvous when updating cluster.

Before this change, we clean up and recreate rendezvous when updating members in the cluster. It cancels pending function calls on workers that are not affected by this update. This CL keeps the original rendezvous and the WorkerSession it refers to, and updates the WorkerSession in place (just like what we already do on the worker side). In addition, reuse the session manager in the grpc_server worker_env since there is no need to recreate it.

PiperOrigin-RevId: 278735207
Change-Id: I883b50c70b1cd269db2b2bce5dc3b9481ab88e10