SNB-index: a SkipNet and B+ tree based auxiliary Cloud index

• Published in: Cluster computing Vol. 17; no. 2; pp. 453 - 462
• Main Authors: Zhou, Wei, Lu, Jin, Luan, Zhongzhi, Wang, Shipu, Xue, Gang, Yao, Shaowen
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.06.2014; Springer; Springer Nature B.V
• Subjects: Algorithms; Applied sciences; Cloud computing; Computer Communication Networks; Computer Science; Computer science; control theory; systems; Computer systems and distributed systems. User interface; Data management; Data models; Data processing; Data processing. List processing. Character string processing; Data storage; Exact sciences and technology; Guarantees; Information retrieval; Information systems. Data bases; Memory and file management (including protection and security); Memory organisation. Data processing; Operating Systems; Performance evaluation; Processor Architectures; Publishing; Queries; Software; Storage systems; Auxiliary Cloud index; Various queries-SkipNet; Availability; Cloud computing; Tree(graph); Scalability; Database query; Keyword; Similarity; Storage system; Information retrieval; Data processing; Range query; Experimental result; Storage management; Classification; Linguistics; Bayes network; Large scale; Internet; Reliability; Incomplete information; Overlay; Data structure
• ISSN: 1386-7857; 1573-7543
• DOI: 10.1007/s10586-013-0246-y

Distributed data management plays an essential part in internet applications. With benefits of scalability and reliability, the Cloud storage systems have become an attractive choice for large-scale data processing. However, most Cloud storage systems currently adopt a hash-like approach to retrieve data that only support simple keyword-based enquiries, but lack various forms of information search. In this paper, we propose a novel SkipNet and B+ tree based index structure, called SNB-index, for Cloud computing systems. SNB-index adopts a two-layer architecture. In the lower layer, it uses the B+ tree to construct efficient local index. In the upper layer, it adaptively selects among local index nodes to form a SkipNet based global overlay. Our scalable auxiliary Cloud index can efficiently support a variety of types of queries (e.g. point-query, range-query, similarity-query), and provide high availability. Some new routing algorithms and mapping processing algorithms are designed to enhance performance. Experimental results show that SNB-index is valid and can be an alternative approach for constructing an auxiliary index in Cloud computing systems.