Now, I am a post-doctoral researcher at INRIA Rennes, working on the MapReduce and Cloud Storage system with Gabriel Antoniu. From 2007 to 2011, I was a PhD. student working with Prof. Hai Jin in the Services Computing Technology and System Laboratory (SCTS) at Huazhong University of Science & Technology (HUST). My research is focused around Distributed Systems and Cloud Computing. My current research focuses on evaluating and improving reliability and consistency in Cloud system. Previously my work centered around optimizing and improving MapReduce-based Cloud systems (Maestro, Disk Meta-Scheduler, CLOUDLET and LEEN). I also investigated the intra-machine cost fairness of Xen-Based Cloud Systems during my internship at Microsoft Research Center Asia (System Research Group). I am also broadly interested in other research areas such as: I/O virtualization to provide QoS guarantees for applications while improving disk efficiency, and private torrent system measurement to understand the correlation between different incentive rules and their impact on user behavior.