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基于CMM模型的HDFS负载均衡策略

DOI: 10.13190/j.jbupt.2014.05.005, PP. 20-25

Keywords: 分布式文件系统,负载均衡,决策模型,剩余负载能力

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Abstract:

为实现Hadoop分布式文件系统的负载均衡,并保证较低的负载迁移代价和数据传输代价,提出了确定环境下多阶段多目标(CMM)决策模型.该模型以CPU、内存和磁盘剩余负载能力作为决策条件,以负载均衡效果、负载迁移代价和数据传输代价作为决策目标,依据决策节点间的影响关系构建有向无环图,通过多个决策阶段的决策,并计算方案效用确定最优均衡方案.仿真实验结果表明,基于CMM模型的负载均衡策略能取得较好的负载均衡效果、负载迁移代价和数据传输代价.

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