Minimizing timestamp size for completely asynchronous optimistic recovery with minimal rollback

  • Authors:
  • S. W. Smith;D. B. Johnson

  • Affiliations:
  • -;-

  • Venue:
  • SRDS '96 Proceedings of the 15th Symposium on Reliable Distributed Systems
  • Year:
  • 1996

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Abstract

Basing rollback recovery on optimistic message logging and replay avoids the need for synchronization between processes during failure-free execution. Some previous research has also attempted to reduce the need for synchronization during recovery, but these protocols have suffered from three problems: not eliminating all synchronization during recovery, not minimizing rollback, or providing these properties but requiring large timestamps. This paper makes two contributions: we present a new rollback recovery protocol, based on our previous work, that provides these properties (asynchronous recovery, minimal rollback) while reducing the timestamp size; and we prove that no protocol can provide these properties and have asymptotically smaller timestamps.