OpenStack环境下计费系统的研究

s we all know, OpenStack is a kind of open-source cloud computing platforms which grows the fastest nowadays. In this paper, we will present you an accounting system under OpenStack. The accounting system first collects the original accounting data; then store the original accounting data in distributed file system , then processing the data to get the accounting results using MapReduce (a parallel computing framework), and finally shows the accounting results to users.