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- Shafaat, Tallat M.KTH,Elektronik- och datorsystem, ECS (author)
On consistency of data in structured overlay networks
- Article/chapterEnglish2008
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- NEW YORK :SPRINGER,2008
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- LIBRIS-ID:oai:DiVA.org:kth-38655
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-38655URI
- https://doi.org/10.1007/978-0-387-09457-1_21DOI
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- Language:English
- Summary in:English
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- QC 20111020
- Data consistency can be violated in Distributed Hash Tables (DHTs) due to inconsistent lookups. In this paper, we identify the events leading to inconsistent lookups and inconsistent responsibilities for a key. We find the inaccuracy of failure detectors as the main reason for inconsistencies. By simulations with inaccurate failure detectors, we study the probability of reaching a system configuration which may lead to inconsistent data. We analyze majority-based algorithms for operations on replicated data. To ensure that concurrent operations do not violate consistency, they have to use non-disjoint sets of replicas. We analytically derive the probability of concurrent operations including disjoint replica sets. By combining the simulation and analytical results, we show that the probability for a violation of data consistency is negligibly low for majority-based algorithms in DHTs.
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- Moser, Monika (author)
- Ghodsi, Ali (author)
- Schuett, Thorsten (author)
- Haridi, SeifKTH,Programvaru- och datorsystem, SCS(Swepub:kth)u1j6y2uf (author)
- Reinefeld, Alexander (author)
- KTHElektronik- och datorsystem, ECS (creator_code:org_t)
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- In:GRID COMPUTINGNEW YORK : SPRINGER, s. 249-2609780387094564
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