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Does the Operational Model Capture Partition Tolerance in Distributed Systems?

  • Grégoire BoninEmail author
  • Achour Mostéfaoui
  • Matthieu Perrin
Conference paper
  • 267 Downloads
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11657)

Abstract

In large scale distributed systems, replication is essential in order to provide availability and partition tolerance. Such systems are abstracted by the wait-free model, composed of asynchronous processes that communicate by sending and receiving messages, and in which any process may crash. Complexity in local memory has already been studied for several objects, including sets, databases and collaborative editors. However, the literature has focused on a subclass of algorithms, operating in the so-called operational model, in which processes can only broadcast one message per update operation and the read operation incurs no communication.

This paper tackles the following question: are the operational model and the wait-free model equivalent from the complexity point of view? We show that, under a weak consistency criterion, implementations in the wait-free model require strictly less local memory than their counterparts in the operational model.

Keywords

Operational model Eventual consistency Space complexity Update consistency Wait-free model 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Grégoire Bonin
    • 1
    Email author
  • Achour Mostéfaoui
    • 1
  • Matthieu Perrin
    • 1
  1. 1.LS2NUniversité de NantesNantesFrance

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