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Title: QLOC : quorums with local reconstruction codes
Authors: Datta, Anwitaman
Fahreza, Adamas Aqsa
Oggier, Frederique
Keywords: Engineering::Computer science and engineering
Issue Date: 2021
Source: Datta, A., Fahreza, A. A. & Oggier, F. (2021). QLOC : quorums with local reconstruction codes. IEEE Access, 9, 93298-93314.
Project: 2018-T1-002-076 
Journal: IEEE Access 
Abstract: In this paper we study the problem of consistency in distributed storage systems relying on erasure coding for storage efficient fault-tolerance. We propose QLOC - a flexible framework for supporting the storage of warm data, i.e., data which, while not being very frequently in use, nevertheless continues to be accessed for reads or writes regularly. QLOC builds upon (1) a generic family of local reconstruction codes with guarantees in terms of fault-tolerance, efficient recovery from failures and degraded mode operations, and can be instantiated with parameters customized to requirements such as storage overhead and reliability dictated by user needs and operational environments, and (2) quorum-based consistency mechanisms with support for read-modify-write operations without any underlying atomic primitives, providing deployment choices trading-off fault-tolerance, consistency and concurrency requirements. We carry out a theoretical analysis of the code properties, and experimentally benchmark the performance of the consistency enforcement mechanisms, demonstrating the practicality of the proposed approach.
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2021.3093450
Schools: School of Computer Science and Engineering 
Rights: © 2021 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCSE Journal Articles

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