When no one wants to enter CR token message circulates. Token not obtained in happened-before order. Election Algorithms Many distributed algorithms require one process to act as coordinator. An election selects the coordinator. Process P notices coordinator is no longer responding to requests.
P drops out.
If no one responds, P becomes coordinator. In The Ring Algorithm. Process P notices coordinator is no longer responding to requests. Two writes happen for same read. Process B reads midway through Process A's transaction.