SDDS Based Hierarchical DHT Systems for an Efficient Resource Discovery in Data Grid Systems
نویسندگان
چکیده
Despite hierarchical Distributed Hash Table (DHT) systems have addressed flat overlay system problems, most of the existing solutions add a significant overhead to large scale systems. In this paper, we propose a hierarchical DHT solution based on scalable distributed data structures (SDDS) for an efficient data sources discovery in data Grids. Our solution deals with a reduced number of gateway peers running a DHT protocol. Each of them serves also as a proxy for second level peers in a single Virtual Organization (VO), structured as an SDDS. The proposed solution offers good performances especially for intra-VO resource discovery queries since they are completely transparent to the top level DHT lookups. The analysis results proved significant system maintenance save especially when nodes join/ leave the system.
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تاریخ انتشار 2012