scala read file on HDFS, one line at a time

Use scala to read a file with only characters. The file is the data that has been cleaned. Regularly, one line is a piece of data.
The current requirement is to read part of the file at a time, and read it in sequence.

In the past, the byte stream occasionally appeared garbled, and finally changed to read one line at a time.

import java.io.{BufferedReader, InputStreamReader}

import org.apache.hadoop.fs.FSDataInputStream

/**
  * Created by wx on 2017/7/25.
  */
object ReadHDFSFileByLine {
  def main(args: Array[String]) {
    var inputStream: FSDataInputStream = null
    var bufferedReader: BufferedReader = null
    try {
      /* inputStream = HDFSUtil.getFSDataInputStream("hdfs://master:9000/TestData/aviation7/part-00018")
       bufferedReader = new BufferedReader(new InputStreamReader(inputStream))
       var lineTxt: String = null
       var count = 1
       // This is an infinite loop and can't be jumped out. I'm very depressed and just use the following
       while ((lineTxt= bufferedReader.readLine()) != null) {
         println(count + "\t" + lineTxt)
         count += 1
         // Let the program pause and sleep for a while
         Thread.sleep(1)
       }*/
      //Get the input stream of HDFS, you can refer to the previous document
      inputStream = HDFSUtil.getFSDataInputStream("hdfs://master:9000/TestData/aviation7/part-00018")
      // Convert to buffer stream
      bufferedReader = new BufferedReader(new InputStreamReader(inputStream))
      // read one line at a time
      var lineTxt: String = bufferedReader.readLine()
      var count = 1
      while (lineTxt != null) {
        println(count + "\t" + lineTxt)
        count += 1
        lineTxt = bufferedReader.readLine()
        // Let the program pause and sleep for a while
        Thread.sleep(1)
      }
    } catch {
      case e: Exception => e.printStackTrace()
    } finally {
      if (bufferedReader != null) {
        bufferedReader.close()
      }
      if (inputStream != null) {
        HDFSUtil.close
      }
    }
  }
}