Abstract
Conflicts naturally arise in optimistically replicated systems. The common way to detect update conflicts is via version vectors, whose storage and communication overhead are number of replicas × number of objects. These costs may be prohibitive for large systems.
This paper presents predecessor vectors with exceptions (PVEs), a novel optimistic replication technique developed for Microsoft’s WinFS system. The paper contains a systematic study of PVE’s performance gains over traditional schemes. The results demonstrate a dramatic reduction of storage and communication overhead in normal scenarios, during which communication disruptions are infrequent. Moreover, they identify a cross-over threshold in communication failure-rate, beyond which PVEs loses efficiency compared with traditional schemes.
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© 2005 Springer-Verlag Berlin Heidelberg
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Malkhi, D., Terry, D. (2005). Concise Version Vectors in WinFS. In: Fraigniaud, P. (eds) Distributed Computing. DISC 2005. Lecture Notes in Computer Science, vol 3724. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11561927_25
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DOI: https://doi.org/10.1007/11561927_25
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-29163-3
Online ISBN: 978-3-540-32075-3
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