K. Mani Chandy and Leslie Lamport. Such a replica must not be prematurely reclaimed. The problem, then, is to detect that all object replicas simultaneously have zero valued reference counts in an environment when simultaneous or pseudosimultaneous queries of all nodes is not feasible. K. Mani Chandy and Leslie Lamport. To guarantee the correctness of a global result, a consistent set of local results must be collected and combined.
Global snapshots are suitable in detecting stable conditions, which stay unchanged once formed.
Therefore , a global snapshot algorithm is required only to determine a global state that is consistent with the known temporal ordering of events. A global snapshot algorithm can be used whenever one wants global information about a distributed system. K. Mani Chandy and Leslie Lamport. No context found.