IDEA开发scala版本的spark程序

package com.gong

import org.apache.spark.{SparkConf, SparkContext}

object MyScalaWorldCount {
  def main(args: Array[String]): Unit = {
        //参数检测
        if(args.length<2){
          System.err.println("Usage: MyScalaWorldCount <input> <output>")
          System.exit(1)
        }

       //创建SparkContext
       val conf = new SparkConf().setAppName("MyScalaWorldCount")
       conf.setMaster("local[2]")
       val sc = new SparkContext(conf)

     //读取数据
    val lines=sc.textFile(args(0))

    //进行相关计算
    val resultRDD = lines.flatMap(_.split("\\s+")).map((_,1)).reduceByKey(_+_)

    //保存结果
    resultRDD.saveAsTextFile(args(1))

    sc.stop()
  }
}