Spark学习笔记之RDD操作编程-Java篇（二） http://www.ccblog.cn/100.htm DEMO代码地址：https://github.com/zhp8341/sparkdemo/blob/master/src/main/java/com/demo/spark/rdddemo/OneRDD.java
Spark学习笔记之键值对操作-Java篇（三） http://www.ccblog.cn/101.htm 源码 https://github.com/zhp8341/sparkdemo/blob/master/src/main/java/com/demo/spark/rdddemo/PairRDDDemo.java
Spark学习笔记之RDD持久化（四） http://www.ccblog.cn/102.htm 源码 https://github.com/zhp8341/sparkdemo/blob/master/src/main/java/com/demo/spark/cache/SparkCacheTest.java https://github.com/zhp8341/sparkdemo/blob/master/src/main/java/com/demo/spark/cache/SparkCacheDemo.java