A Pessimistic Consistency Control Algorithm for Replicated Files which Achieves High Availability

A consistency control algorithm is described for managing replicated files in the face of network partitioning due to node or communication link failures. It adopts a pessimistic approach in that mutual consistency among copies of a file is maintained by permitting files to be accessed only in a single partition at any given time. The algorithm simplifies the Davcev-Burkhard dynamic voting algorithm (1985) and also improves its availability by adding the notion of linearly ordered copies. A proof that any pessimistic algorithm with fresh reads is one-copy serializable is given. >

[1]  J. D. Day,et al.  A principle for resilient sharing of distributed resources , 1976, ICSE '76.

[2]  David K. Gifford,et al.  Weighted voting for replicated data , 1979, SOSP '79.

[3]  Leslie Lamport,et al.  Reaching Agreement in the Presence of Faults , 1980, JACM.

[4]  Toshimi Minoura,et al.  Resilient Extended True-Copy Token Scheme for a Distributed Database System , 1982, IEEE Transactions on Software Engineering.

[5]  Richard D. Schlichting,et al.  Fail-stop processors: an approach to designing fault-tolerant computing systems , 1983, TOCS.

[6]  Derek L. Eager,et al.  Achieving robustness in distributed database systems , 1983, TODS.

[7]  Michael Stonebraker,et al.  A Formal Model of Crash Recovery in a Distributed System , 1983, IEEE Transactions on Software Engineering.

[8]  Philip A. Bernstein,et al.  The failure and recovery problem for replicated databases , 1983, PODC '83.

[9]  Richard D. Schlichting,et al.  Fail-Stop Processors: An Approach to Designing Computing Systems , 1983 .

[10]  Philip A. Bernstein,et al.  Site Initialization, Recovery, and Backup in a Distributed Database System , 1984, IEEE Transactions on Software Engineering.

[11]  Amr El Abbadi,et al.  Availability in partitioned replicated databases , 1985, PODS.

[12]  Walter A. Burkhard,et al.  Consistency and recovery control for replicated files , 1985, SOSP '85.

[13]  Flaviu Cristian,et al.  An efficient, fault-tolerant protocol for replicated data management , 1985, PODS '85.

[14]  Sushil Jajodia,et al.  Dynamic voting , 1987, SIGMOD '87.

[15]  Sushil Jajodia,et al.  Enhancements to the Voting Algorithm , 1987, VLDB.

[16]  Amr El Abbadi,et al.  Maintaining availability in partitioned replicated databases , 1987, ACM Trans. Database Syst..