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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Constructing Coteries
verfasst von : Timo Warns
Erschienen in: Structural Failure Models for Fault-Tolerant Distributed Computing
Verlag: Vieweg+Teubner
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A distributed system generally requires some coordination and agreement among the participating processes. For example, in the case of a distributed database, it is essential that the processes agree on whether to commit or abort the distributed transactions. In a distributed operating system, processes need to coordinate their usage of shared resources. Such challenges are rather easy to solve in fault-free systems, for example, by introducing a central coordinator process that is accessed by each process before performing a critical operation. In systems with faulty components however, coordination and agreement become hard or even impossible to solve. A central coordinator does not suffice as this coordinator may crash and prevent other processes from making progress.