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Distributed Computing

, Volume 13, Issue 2, pp 99–125 | Cite as

Failure detection and consensus in the crash-recovery model

  • Marcos Kawazoe Aguilera
  • Wei Chen
  • Sam Toueg
Original articles

Summary. We study the problems of failure detection and consensus in asynchronous systems in which processes may crash and recover, and links may lose messages. We first propose new failure detectors that are particularly suitable to the crash-recovery model. We next determine under what conditions stable storage is necessary to solve consensus in this model. Using the new failure detectors, we give two consensus algorithms that match these conditions: one requires stable storage and the other does not. Both algorithms tolerate link failures and are particularly efficient in the runs that are most likely in practice – those with no failures or failure detector mistakes. In such runs, consensus is achieved within \(3 \delta\) time and with 4 n messages, where \(\delta\) is the maximum message delay and n is the number of processes in the system.

Key words:Fault tolerance – Failure detection – Consensus – Process crash – Process recovery – Asynchronous systems – Stable storage 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Marcos Kawazoe Aguilera
    • 1
  • Wei Chen
    • 2
  • Sam Toueg
    • 1
  1. 1.Department of Computer Science, Cornell University, Ithaca, NY 14853-7501, USA (e-mail: {aguilera,sam}@cs.cornell.edu) US
  2. 2.Oracle Corporation, One Oracle Drive, Nashua, NH 03062, USA (e-mail: weichen@us.oracle.com) US

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