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In this paper, we consider the widespread multi-stage job scheduling problem (e.g., in big data processed by MapReduce) in which jobs arrive at hybrid cloud systems stochastically. The objective is to minimize the number of elastic computing instances. Along with hard deadlines of jobs, the problem under study is NP-hard in strong sense. In terms of initial job priorities, timetables are constructed...
The original task scheduling algorithm of Hadoop cannot meet the performance requirements of heterogeneous clusters. According to the dynamic change of load of each task node and the difference of node performance of different tasks in the heterogeneous Hadoop cluster, a novel adaptive task scheduling strategy based on dynamic workload adjustment (ATSDWA) is presented. With ATSDWA, tasktrackers can...
QoS plays a key role in evaluating a service or a service composition plan across clouds and data centers. Currently, the energy cost of a service's execution is not covered by the QoS framework, and a service's price is often fixed during its execution. However, energy consumption has a great contribution in determining the price of a cloud service. As a result, it is not reasonable if the price...
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