Code example for Random

0
    FileSystem fs = cluster.getFileSystem();
 
    // Write a file with the specified amount of data 
    DataOutputStream os = fs.create(filepath);
    byte data[] = new byte[1024 * sizeKB];
    new Random().nextBytes(data);
    os.write(data);
    os.close();
    return data;
  } 
 
  /** 
   * Get the list of Blocks for a file. 
   */ 
  public List<LocatedBlock> getFileBlocks(Path filepath, int sizeKB)
      throws IOException { 
    // Return the blocks we just wrote 
    DFSClient dfsclient = getDFSClient();
    return dfsclient.getNamenode().getBlockLocations(
      filepath.toString(), 0, sizeKB * 1024).getLocatedBlocks();
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