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Documents authored by Wei, Hengfeng

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DOI: 10.4230/LIPIcs.OPODIS.2018.12
Specification and Implementation of Replicated List: The Jupiter Protocol Revisited

Authors: Hengfeng Wei, Yu Huang, and Jian Lu

Published in: LIPIcs, Volume 125, 22nd International Conference on Principles of Distributed Systems (OPODIS 2018)

Abstract
The replicated list object is frequently used to model the core functionality of replicated collaborative text editing systems. Since 1989, the convergence property has been a common specification of a replicated list object. Recently, Attiya et al. proposed the strong/weak list specification and conjectured that the well-known Jupiter protocol satisfies the weak list specification. The major obstacle to proving this conjecture is the mismatch between the global property on all replica states prescribed by the specification and the local view each replica maintains in Jupiter using data structures like 1D buffer or 2D state space. To address this issue, we propose CJupiter (Compact Jupiter) based on a novel data structure called n-ary ordered state space for a replicated client/server system with n clients. At a high level, CJupiter maintains only a single n-ary ordered state space which encompasses exactly all states of each replica. We prove that CJupiter and Jupiter are equivalent and that CJupiter satisfies the weak list specification, thus solving the conjecture above.
Cite as

Hengfeng Wei, Yu Huang, and Jian Lu. Specification and Implementation of Replicated List: The Jupiter Protocol Revisited. In 22nd International Conference on Principles of Distributed Systems (OPODIS 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 125, pp. 12:1-12:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

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@InProceedings{wei_et_al:LIPIcs.OPODIS.2018.12,
  author =	{Wei, Hengfeng and Huang, Yu and Lu, Jian},
  title =	{{Specification and Implementation of Replicated List: The Jupiter Protocol Revisited}},
  booktitle =	{22nd International Conference on Principles of Distributed Systems (OPODIS 2018)},
  pages =	{12:1--12:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-098-9},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{125},
  editor =	{Cao, Jiannong and Ellen, Faith and Rodrigues, Luis and Ferreira, Bernardo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2018.12},
  URN =		{urn:nbn:de:0030-drops-100720},
  doi =		{10.4230/LIPIcs.OPODIS.2018.12},
  annote =	{Keywords: Collaborative text editing systems, Replicated list, Concurrency control, Strong/weak list specification, Operational transformation, Jupiter protocol}
}
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