Transforming Asynchronous Systems with Crash-Stop Failures and Failure Detectors to the General Omission model

Carole Delporte-Gallet (1) , Hugues Fauconnier (1) , Felix Freiling (2) , Lucia Draque Penso (2) , Andreas Tielmann (1)

1 LIAFA - Laboratoire d'informatique Algorithmique : Fondements et Applications
2 Laboratory of Dependable Distributed Systems

This paper studies the impact of omission failures on asynchronous distributed systems with crash-stop failures. For the large group of problem specifications that are restricted to correct processes, we show how to transform a crash-stop related problem specification into an equivalent omission one. For that, we provide transformations for algorithms and failure detectors, such that if and only if an algorithm using a failure detector satisfies a problem specification, then the transformed algorithm using the transformed failure detector satisfies the transformed problem specification.Our transformed problem specification is ensured to be non-trivial, and moreover, the transformation reveals itself to be in a reasonable sense weakest failure detector preserving. Our results help to use the power of the well-understood crash-stop model to automatically derive solutions for the general omission model, which has recently raised interest for being noticeably applicable for security problems in distributed environments equipped with security modules such as smartcards [10],[11],[1].

Mots clés: Transformations; Asynchronous Systems; Failure Detectors; Crash-Stop; General Omission

Domaines: Informatique

Carole Delporte-Gallet, Hugues Fauconnier, Felix Freiling, Lucia Draque Penso, Andreas Tielmann. Transforming Asynchronous Systems with Crash-Stop Failures and Failure Detectors to the General Omission model. 2007. ⟨hal-00130766v2⟩