spark api介绍

摘自：

http://homepage.cs.latrobe.edu.au/zhe/ZhenHeSparkRDDAPIExamples.html#aggregateByKey

推荐Spark亚太研究院的《18小时内掌握Spark》这个课程

http://www.cnblogs.com/jzdwajue/p/6703888.html

http://blog.csdn.net/anningzhu/article/details/60778962

http://blog.csdn.net/anningzhu/article/details/60779146

http://blog.csdn.net/anningzhu/article/details/60779494

http://www.36dsj.com/archives/61155