Brief Announcement: On the Meaning of Solving a Task with a Failure Detector

  • Carole Delporte-Gallet
  • Hugues Fauconnier
  • Eli Gafni
  • Petr Kuznetsov
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6950)


We amend the framework, of two decades, of failure detectors [3,4] to bring it in line with the modern view of solving a distributed task [8] that separates processes and threads. While the conventional framework precludes a thread from advancing in the absence of failure detector values to “its” process, we allow live processes to advance the threads of failed processes. This provides for the application of the wealth of simulation techniques [2,6,7] designed for read-write threads and consequently to completely characterize task solvability with failure detectors. When dealing with the extremes, consensus and set-consensus, the former framework sufficed. With the advances in understanding of more nuanced notions like k-set consensus the framework requires amendment.


  1. 1.
    Afek, Y., Nir, I.: Failure detectors in loosely named systems. In: PODC, pp. 65–74. ACM Press, New York (2008)Google Scholar
  2. 2.
    Borowsky, E., Gafni, E.: Generalized FLP impossibility result for t-resilient asynchronous computations. In: STOC, pp. 91–100. ACM Press, New York (1993)Google Scholar
  3. 3.
    Chandra, T.D., Hadzilacos, V., Toueg, S.: The weakest failure detector for solving consensus. J. ACM 43(4), 685–722 (1996)MathSciNetCrossRefzbMATHGoogle Scholar
  4. 4.
    Chandra, T.D., Toueg, S.: Unreliable failure detectors for reliable distributed systems. J. ACM 43(2), 225–267 (1996)MathSciNetCrossRefzbMATHGoogle Scholar
  5. 5.
    Delporte-Gallet, C., Fauconnier, H., Guerraoui, R.: Tight failure detection bounds on atomic object implementations. J. ACM 57(4) (2010)Google Scholar
  6. 6.
    Delporte-Gallet, C., Fauconnier, H., Guerraoui, R., Tielmann, A.: The disagreement power of an adversary. In: Keidar, I. (ed.) DISC 2009. LNCS, vol. 5805, pp. 8–21. Springer, Heidelberg (2009)CrossRefGoogle Scholar
  7. 7.
    Gafni, E., Kuznetsov, P.: Turning adversaries into friends: Simplified, made constructive, and extended. In: Lu, C., Masuzawa, T., Mosbah, M. (eds.) OPODIS 2010. LNCS, vol. 6490, pp. 380–394. Springer, Heidelberg (2010)CrossRefGoogle Scholar
  8. 8.
    Lamport, L.: The Part-Time parliament. ACM Transactions on Computer Systems 16(2), 133–169 (1998)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Carole Delporte-Gallet
    • 1
  • Hugues Fauconnier
    • 1
  • Eli Gafni
    • 2
  • Petr Kuznetsov
    • 3
  1. 1.University Paris DiderotFrance
  2. 2.Computer Science DepartmentUniversity of CaliforniaLos AngelesUSA
  3. 3.TU Berlin/Deutsche Telekom LaboratoriesBerlinGermany

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