Spark 2.0 DataSet 各种操作 action操作 基本操作 typed untyped
1、Action操作employee数据表{"name":"Leo","age":25,"depId":1,"gender":"male","salary":20000}{"name":"Marry","age":30,"depId":2,"gender":"female","salary":25000}{"name":"Jack","age":35,"depId":1,"gender":"mal