实验2 spark accessing file system data

    /* SimpleApp.scala */
    import org.apache.spark.SparkContext
    import org.apache.spark.SparkContext._
    import org.apache.spark.SparkConf
    object SimpleApp {
     def main(args: Array[String]) {
     val logFile = "hdfs://localhost:9000/user/hadoop/input/test.txt"
     val conf = new SparkConf().setAppName("Simple Application")
     val sc = new SparkContext(conf)
     val logData = sc.textFile(logFile, 2)
     val num = logData.count()
     printf("The num of this file is %d", num)
     }
    }