한국정보처리학회논문지 (The Transactions of the Korea Information Processing Society)

한국정보처리학회 (Korea Information Processing Society)
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비동기적 분산 시스템하에서 선출 문제 해결을 위한 최소 필요 조건

The Minimum Requirements for Solving Election Problem in Asynchronous Distributed Systems

  • 박성훈 (남서울대학교 컴퓨터학과)
  • 발행 : 2000.12.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 비동기적 분산 시스템에서 산출(Election) 문제를 해결하는데 필요한 최소한의 조건에 대해 논하고자 한다. 이 논문의 핵심은 비동기적 분산 시스템에서 산출 문제를 해결하는데 가장 약한 고장 추적장치는 무엇인가를 찾아내는 데 있다. 먼저 비동기적 분산 시스템에서 산출 문제와 합의(Consensus)문제에 대한 관련성을 토의하고 선출 문제는 합의 문제보다 더욱 어려운 문제임을 보인다. 보다 엄밀하게 표현하자면, 선출 문제를 해결하는데 필요한 가장 약한 고장 추적 장치는 완전한 고장 추적 장치이어야 하는 것으로, 이는 합의 문제를 해결하는데 필요한 가장 약한 고장 추적 장치보다 확실히 강한 것이다.

This paper is about the minimum requirements to solve the Election problem in asynchronous distributed systems. The focus of the paper is to find out what failure detector is the weakest one to solve the Election problem. We first discuss the relationship between the Election problem and the Consensus problem in asynchronous distributed systems with unreliable failure detectors and show that the Election problem is harder than the Consensus problem. More precisely, the weakest failure detector that is needed to solve this problem is a Perfect Failure Detector. which is strictly stronger than the weakest failure detector that is needed to solve Consensus.

키워드

참고문헌

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