Another advantage of free choice (Extended Abstract): Completely asynchronous agreement protocols

  • Authors:
  • Michael Ben-Or

  • Affiliations:
  • -

  • Venue:
  • PODC '83 Proceedings of the second annual ACM symposium on Principles of distributed computing
  • Year:
  • 1983

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Abstract

Recently, Fischer, Lynch and Paterson [3] proved that no completely asynchronous consensus protocol can tolerate even a single unannounced process death. We exhibit here a probabilistic solution for this problem, which guarantees that as long as a majority of the processes continues to operate, a decision will be made (Theorem 1). Our solution is completely asynchronous and is rather strong: As in [4], it is guaranteed to work with probability 1 even against an adversary scheduler who knows all about the system.