Patent ID: 11894972
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 11:
12. The method of claim 8, further comprising determining, by the candidate replica, whether one or more replicas support the candidate replica's assumption of the first role, wherein said determining comprises one or more of:
determining whether a replica, of the one or more replicas, has observed a more recent membership version for the replicas storing the data than a most recent membership version observed by the candidate replica assuming the first role, wherein membership version is incremented each time a membership change is made in the replica group;
determining whether the replica, of the one or more replicas, is no longer hosted on a computing node from which state information for the replica is gathered; or
determining whether the replica, of the one or more replicas, has seen a more recent value for the lock than a most recent lock value observed by the candidate replica attempting to assume the first role, wherein lock value is incremented each time the lock is acquired by a different replica.