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Reconfigurable Lattice Agreement and Applications

Abstract : Reconfiguration is one of the central mechanisms in distributed systems. Due to failures and connectivity disruptions, the very set of service replicas (or $servers$) and their roles in the computation may have to be reconfigured over time. To provide the desired level of consistency and availability to applications running on top of these servers, the $clients$ of the service should be able to reach some form of agreement on the system configuration. We observe that this agreement is naturally captured via a $lattice$ partial order on the system states. We propose an asynchronous implementation of $reconfigurable$ lattice agreement that implies elegant reconfigurable versions of a large class of $lattice$ abstract data types, such as max-registers and conflict detectors, as well as popular distributed programming abstractions, such as atomic snapshot and commit-adopt.
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Submitted on : Monday, October 21, 2019 - 12:17:34 PM
Last modification on : Wednesday, October 26, 2022 - 8:15:54 AM
Long-term archiving on: : Wednesday, January 22, 2020 - 2:20:03 PM


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Petr Kuznetsov, Thibault Rieutord, Sara Tucci-Piergiovanni. Reconfigurable Lattice Agreement and Applications. [Research Report] Institut Polytechnique Paris; CEA List. 2019. ⟨cea-02321547⟩



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