Analysis of the Efficiency of Parallel Hash-Join Algorithms Based on Shared-Nothing
基于Shared-Nothing的并行Hash连接算法效率分析

Based on the shared-nothing construction,the various factors which may affect the query responding time of parallel join algorithms are analyzed.A cost analysis model is proposed to calculate the average task execution time on each processor and the total query responding time.The execution efficiencies of different parallel Hash algorithms based on the variation of memory are compared.The presented model and the analysis method have provided a feasible way to evaluate and choose parallel join algorithms.