DistributedFSCheck.java 文件源码

private void createInputFile(String rootName) throws IOException {
  cleanup();  // clean up if previous run failed

  Path inputFile = new Path(MAP_INPUT_DIR, "in_file");
  SequenceFile.Writer writer =
    SequenceFile.createWriter(fs, fsConfig, inputFile, 
                              Text.class, LongWritable.class, CompressionType.NONE);

  try {
    nrFiles = 0;
    listSubtree(new Path(rootName), writer);
  } finally {
    writer.close();
  }
  LOG.info("Created map input files.");
}