/**
  * This method is not supported in {@link HdfsFileInputStream}.
  *
  * @param targetPos N/A
  * @return N/A
  * @throws IOException always
  */
 @Override
 public boolean seekToNewSource(long targetPos) throws IOException {
   throw new IOException(ExceptionMessage.NOT_SUPPORTED.getMessage());
 }
 /**
  * This method is not supported in {@link HdfsFileInputStream}.
  *
  * @return N/A
  * @throws IOException always
  */
 @Override
 public int available() throws IOException {
   throw new IOException(ExceptionMessage.NOT_SUPPORTED.getMessage());
 }