【Spark】【RDD】从本地文件系统创建RDD

练习作业

完成任务从文件创建三个RDD(math bigdata student)

cd ~
touch math
touch bigdata
touch student
pwd

启动Spark-shell

var localrdd1 = sc.textFile("file:///home/用户名/math")
var localrdd2 = sc.textFile("file:///home/用户名/bigdata")
var localrdd3 = sc.textFile("file:///home/用户名/student")
localrdd1.collect
localrdd2.collect
localrdd3.collect