Distributed systems depend on consistent global snapshots for process recovery and garbage collection activity. We provide exact conditions for an arbitrary checkpoint based on independent dependency tracking within clusters of nodes.. The method permits that nodes (within clusters) can independently compute dependency information based on available (local)… (More)
Pneumorrhachis(PR) is a rare phenomenon and post traumatic PR even more so. Presentation can vary from asymptomatic to significant neurological deficit and so the management has to be individualised. We present a case of post-traumatic cervical PR.