rebalance exited with reason failed to aggregate rebalance progress from all eventing nodes

2018-06-28T14:28:18.461-07:00, ns_orchestrator:0:critical:message(ns_1@172.23.104.16) - Rebalance exited with reason {service_rebalance_failed,eventing,

                              {rebalance_failed,

                               {service_error,

                                <<"failed to aggregate rebalance progress from all eventing nodes, err: map[127.0.0.1:8096:Get http://127.0.0.1:8096/getAggRebalanceProgress: net/http: request canceled (Client.Timeout exceeded while awaiting headers)]">>}}}