This is my personal blog site, on topics related to big-data analytics platform. Roughly speaking, the platform layer of the big-data stack includes software technologies that enable the development of analytics software. For instance, distributed database systems can be considered to be at the platform layer. A little introduction of me the blogger. I think of myself a Big-data Hands-on Architect . After I got my Ph.D. in database systems in 2002 (University of California, Riverside), I worked as a faculty member for 7 years and then switched to the industry. I've moved from Microsoft to Paradigm4 to Facebook. At Microsoft I worked on a single-server system (Microsoft SQL Server). At Paradigm4 (which was founded by Turing Award Laureate Mike Stonebraker) I led the engineering team to develop a "tight-clustering" distributed system (SciDB). At Facebook I'm working on "loose-clustering" distributed systems (Spark, etc.). These experiences provided me a rea