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Petr Kuznetsov's Publications

The Weakest Failure Detector for Solving k-Set Agreement
Citation key GK-WFDSKSA-09
Author Gafni, Eli and Kuznetsov, Petr
Title of Book 28th ACM SIGACT/SIGOPS Symposium on Principles of Distributed Computing (PODC 2009)
Pages 83–91
Year 2009
ISBN 978-1-60558-396-9
DOI http://dx.doi.org/10.1145/1582716.1582735
Location Calcary, AB, Canada
Address New York, NY, USA
Month August
Publisher ACM
Abstract A failure detector is a distributed oracle that provides processes in a distributed system with hints about failures. The notion of a weakest failure detector captures the exact amount of synchrony needed for solving a given distributed computing problem. In this paper, we determine the weakest failure detector for solving k-set agreement among n processes (n>k) using reads and writes in shared memory, regardless of the assumptions on when and where failures might occur. This failure detector is derived directly from the impossibility of wait-free k+1-process k-set agreement. Our approach can be viewed as an extension of the asynchronous BG-simulation technique to partially synchronous systems.
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