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Object-based protocol for replicated objects

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3 Author(s)
Hasegawa, K. ; Dept. of Comput. & Syst. Eng., Tokyo Denki Univ., Japan ; Higaki, H. ; Takizawa, M.

Objects support abstract methods in object-based systems. We discuss a novel object-based locking (OBL) protocol to lock replicated objects by extending the quorum-based protocol handling read and write requests to abstract methods. Unless two methods op1 and op 2 conflict, the quorum sets of the methods may not intersect even if op1 and op2 update the replicas. Here, a pair of replicas A and B compute op1 and opt, respectively. If op1 and op2 do not conflict, A and B can later compute op2 and op1, respectively. We newly propose a version vector to identify what methods are computed on a replica. We discuss the OBL protocol where the replicas exchange the compatible methods by using the version vector

Published in:

Autonomous Decentralized Systems, 1999. Integration of Heterogeneous Systems. Proceedings. The Fourth International Symposium on

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