报告题目：Online Optimization and Fair Costing for Dynamic Data Sharing in a Cloud Data Market

报告人：李剑

报告时间：2015年6月10日 上午 9:00

报告地点：贵州大学北校区博学楼603室

报告内容摘要：      

The data markets are emerging to address many organizations’ need to find moreuseful external data sets for deeper insights. Existing data markets have two  main limitations. First, they either sell a whole data set or some fixed views,but do not allow arbitrary ad- hoc queries. Second, they only sell static data,but not data that are frequently updated. While there exist proposed solutions for selling ad-hoc queries, it is an open question what mechanism should be used to sell adhoc queries on dynamic data.In this paper, they study a data market framework that enables the sale orsharing of dynamic data, where each sharing is specified by an ad-hoc query.

报告题目：Analysis of HDFS Under HBase: A Facebook Messages Case Study

报告人：刘秋彤

报告时间：2015年6月10日 上午 9:00

报告地点：贵州大学北校区博学楼603室

报告内容摘要：            

This paper present a multilayer study of the Facebook Messagesstack, which is based on HBase and HDFS.They collect and analyze HDFS traces to identify potential improvements, which we then evaluate via simulation.