信息知识库中的数据可用性恢复策略  

Data availability recovery strategy in information knowledge base

作　　者：徐鹏[1] 孟宇龙[2] 朱群 侍守创 龚玉婷 XU Peng;MENG Yulong;ZHU Qun;SHI Shouchuang;GONG Yuting(Jiangsu JARI Technology Group Co.Ltd., The 716th Research Institute of CSIC, Lianyungang 222002, China;College of Computer Science and Technology, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]中国船舶重工集团公司第七一六研究所江苏杰瑞科技集团有限责任公司,江苏连云港222002 [2]哈尔滨工程大学计算机科学与技术学院,黑龙江哈尔滨150001

出　　处：《国防科技大学学报》2021年第6期102-107,134,共7页Journal of National University of Defense Technology

基　　金：科技部智能工厂与网络协同制造专项资助项目(2020YFB1712600);工信部高技术船舶资助项目(MC-201720-Z02);工信部船舶总装建造智能化专项资助项目(CJ04N20)。

摘　　要：信息知识库在工业生产中能够提高生产效率、降低资源消耗,但数据失效频率高。针对多节点失效重构的纠删码策略较少,且未充分考虑失效数据重构时各参与节点间的链路关系,导致重构效率较低。针对信息知识库数据失效,提出一种新的重构策略。根据节点的数据处理能力,选取数据处理能力最高的新生节点为路由节点;依据路由节点与候选供应节点及剩余空闲节点的链路带宽,确定供应节点及新生节点,从而构建数据重构网络拓扑,提高失效数据重构效率。实验结果证实,与传统纠删码策略性能比较,该方法有较短的重构时间和较高的重构成功率。The information knowledge base can improve production efficiency and reduce resource consumption in industrial production,but it frequently meets with data failure.Furthermore,erasure coding strategies for multi-node failure reconstruction are limited,and the link relationship between participating nodes during the reconstruction of failed data has not been fully considered,resulting in low reconstruction efficiency.Aiming at the data failure of the information knowledge base,a multi-node failure reconstruction method was proposed.According to the data processing capacity of the node,the new node with the highest data processing capacity was selected as the routing node;then according to the link bandwidth of the routing node,the candidate supply node and the remaining idle nodes,the supply node and the new node were determined,thereby constructing the data reconstruction network topology and improving the efficiency of reconstruct failed data.Experimental results show that this method has shorter reconstruction time and higher reconstruction success rate when compared with traditional erasure code reconstruction methods.

关 键 词：信息知识库 纠删码 多节点失效 数据处理 链路带宽 

分 类 号：TN95[电子电信—信号与信息处理]