Quorum-Based Locking Protocol in Nested Invocations of Methods
DEXA '01 Proceedings of the 12th International Conference on Database and Expert Systems Applications
Quorum-Based Protocol for Locking Replicas of Objects
ICCNMC '01 Proceedings of the 2001 International Conference on Computer Networks and Mobile Computing (ICCNMC'01)
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We discuss a novel object-based locking (OBL) protocol to lock replicated objects by extending the traditional quorum-based protocols to objects with abstract methods. If a pair of methods op/sub 1/ and op/sub 2/ are compatible, the summation of the quorum numbers of op/sub 1/ and op/sub 2/ is not larger than the number of replicas in the OBL protocol. We propose, for the first time, a version vector to identify what methods are performed on a replica. The replicas exchange compatible methods using the version vector.