'Election algorithm' diaporamas de présentation

LINF 2345 Leader election and consensus with crash and Byzantine failures

LINF 2345 Leader election and consensus with crash and Byzantine failures. Seif Haridi Peter Van Roy. Overview. Synchronous systems with crash failures Leader election in rings Fault-tolerant consensus. Leader Election in Rings. Background Rings.

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15-446 Distributed Systems Spring 2009

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Chapter 12

Chapter 12. Coordination and agreement. outline. Introduction Distributed mutual exclusion Elections Multicast communication Consensus and related problems. introduction.

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Synchronization

Synchronization. Clock Synchronization In a centralized system time is unambiguous. In a distributed system agreement on time is not obvious . When each machine has its own clock, an event that occurred after another event may be assigned an earlier time. Physical clocks.

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Leader Election

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Distributed Systems CS 15-440

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Synchronization

Synchronization. 5.1 clock synchronization * 5.2 logical clocks * 5.3 global state * 5.4 election algorithm * 5.5 mutual exclusion * 5.6 distributed transaction. Chapter 5. Issues. Multiple processes do not simultaneously access a shared resource

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A Location Service for Beacon Vector Routing

A Location Service for Beacon Vector Routing. Chris Baker, Daekyeong Moon, Jorge Ortiz. Motivation and Problem Formulation. Beacon Vector Routing (BVR) Point-to-point routing scheme Dynamic beacon-derived coordinate system

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Leader Election

Leader Election. What is the worst case turnaround time for the ring leader election algorithm? (# of message transmissions) A: N B: 2N C: 3N D: 3N-1. Leader Election. Ring-based algorithm guarantees: A: Safety B: Liveness C: Both D: Neither. Leader Election.

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