The Weakest Failure Detector Abstraction

Speaker : Petr Kuznetsov
Télécom Paris
Date: 06/04/2022
Time: 11:00 am - 12:00 pm
Location: Paris-Rennes Room (EIT Digital)


Many important distributed computing problems cannot be solved in purely asynchronous fault-prone systems. These impossibilities can be circumvented with failure detectors, distributed oracles that provide computing units with hints about failures. The weakest failure detector for a given problem defines necessary and sufficient assumptions about failures that enable the problem’s solutions. In this meeting, we are going to discuss how to determine two important weakest failure detectors: (1) Omega, the leader election failure detector for solving consensus and (2) Sigma, the quorum failure detector for implementing read-write storage.

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