2022-01-10 16:31:08,299 - Communicator - INFO - Action: client_registration grpc communication error. retry: 1493, First start till now: 0.0009903907775878906 seconds. 2022-01-10 16:31:08,300 - Communicator - INFO - Could not connect to server: MyServer:8004 Setting flag for stopping training. failed to connect to all addresses 2022-01-10 16:31:08,300 - Communicator - INFO - <_InactiveRpcError of RPC that terminated with: status = StatusCode.UNAVAILABLE details = "failed to connect to all addresses" debug_error_string = "{"created":"@1641832268.299297470","description":"Failed to pick subchannel","file":"src/core/ext/filters/client_channel/client_channel.cc","file_line":5390,"referenced_errors":[{"created":"@1641832268.299286925","description":"failed to connect to all addresses","file":"src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc","file_line":397,"grpc_status":14}]}"