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分布式系统数据复制协议的研究
引用本文:李娟,张文东,明德廷. 分布式系统数据复制协议的研究[J]. 计算机工程与设计, 2007, 28(2): 290-293,303
作者姓名:李娟  张文东  明德廷
作者单位:中国石油大学,计算机与通信工程学院,山东,东营,257061;江西农业大学,计算机与信息工程学院,江西,南昌,330045;中国石油大学,计算机与通信工程学院,山东,东营,257061;北京科技大学,信息工程学院,北京,100083
摘    要:
数据复制正在并行信息系统的设计中起着越来越重要的作用.特别地,为了提高性能和可用性,对集群体系结构的广泛使用经常要求复制数据.然而,维持不同拷贝的一致性带来严重的可伸缩性问题.为了克服这个局限性,基于表决的协议经常被作为一种缩减复制的总开销的方法.为了更好理解它们在实际中的性能,分析了几种表决算法,结果是基于表决的复制协议表现出不错的性能.测试表明ROWA-A(read-one/write-all-available)协议对于需要大量数据复制的应用是最好的选择.

关 键 词:数据复制  可伸缩性  可用性  通信代价  读一个写所有可获得的协议(ROWA-A)  法定人数
文章编号:1000-7024(2007)02-0290-04
修稿时间:2006-02-05

Research of data replication protocols based on distributed system
LI Juan,ZHANG Wen-dong,MING De-ting. Research of data replication protocols based on distributed system[J]. Computer Engineering and Design, 2007, 28(2): 290-293,303
Authors:LI Juan  ZHANG Wen-dong  MING De-ting
Affiliation:1. Institute of Computer and Communication Engineering, China University of Petroleum, Dongying 257061, China; 2. Department of Computer and Information, Jiangxi Agricultural University, Nanchang 330045, China; 3. School of Information Engineering, University of Science and Technology Beijing, Beijing 100083, China
Abstract:
Data replication is playing an increasingly important role in the parallel information systems.Particularly,the wide use of cluster architectures often requires replicate data for performance and availability reasons.However,maintaining the consistency of the different replicas causes severe scalability problems.To illuminate this limitation,quorums are often suggested as a way to reduce the overall overhead of replication.Several quorum types are analyzed in order to better understand their behavior in practice.The results obtained challenge many of the assumptions behind quorums based on replication.The evaluation indicates that the conventional read-one/write-all protocol is the best choice for a large range of applications requiring data replication.
Keywords:data replication  scalability  availability  communication overhead  read-one/write-all-available protocol  quorums
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