1. Service Computing Technology and System Lab, Cluster and Grid Computing Lab, Big Data Technology and System Lab, School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan, China and Department of Computer Science, City University of Hong Kong, Kowloon, Hong Kong
2. College of Computer Science, Chongqing University, Chongqing, China
3. Service Computing Technology and System Lab, Cluster and Grid Computing Lab, Big Data Technology and System Lab, School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan, China
4. Department of Computer Science, City University of Hong Kong, Kowloon, Hong Kong