DHitchhiker Codes in Heterogeneous Peer-to-Peer Distributed Storage

被引：0
|
作者：
Hu J.-P. [1 ]
Li G.-Y. [1 ]
Zhou Y. [1 ]
Li H. [1 ]
Jiang X.-Y. [1 ]
Han H.-Y. [1 ]
机构：
[1] College of Computer Science, Sichuan Normal University, Chengdu
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2021年 / 49卷 / 06期
关键词：
Credibility; Decentralized storage; Hitchhiker; MDS codes; Reed-Solomon codes;
D O I：
10.12263/DZXB.20200288
中图分类号：
学科分类号：
摘要：
Decentralized storage with high availability and security has the problem of high repair bandwidth due to the same parameter low rate Reed-Solomon codes.Thus, a low repair bandwidth DHitchhiker based on credibility is proposed.Data nodes and some parity nodes in the first sub-stripe of Hitchhiker are piggybacked on the second sub-stripe of the remaining parity nodes.We classify the nodes, and let thehigh-credit nodes store the remaining parity nodes, the low-credit nodes store the data nodes and some parity nodes, and different types of nodes adopt different repair strategies.It is proved that the repair bandwidth can be reduced by about 25% at repairing low-credit nodes.And the repair bandwidth can be reduced by about 0.5% without classifying the nodes.What's more, the repair bandwidth can also be reduced by about 1% and the repair time can be reduced by about 2.5% ~ 3.3% based on the credibility of the nodes. © 2021, Chinese Institute of Electronics. All right reserved.
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收藏
页码：1151 / 1158
页数：7
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