How to use the hdfs.HdfsError function in hdfs

def test_get_conn(self, mock_get_connections, mock_insecure_client):
        mock_insecure_client.side_effect = [HdfsError('Error'), mock_insecure_client.return_value]
        conn = self.webhdfs_hook.get_conn()

        mock_insecure_client.assert_has_calls([
            call('http://{host}:{port}'.format(host=connection.host, port=connection.port),
                 user=connection.login)
            for connection in mock_get_connections.return_value
        ])
        mock_insecure_client.return_value.status.assert_called_once_with('/')
        self.assertEqual(conn, mock_insecure_client.return_value)

def rename(self, source_file_names, destination_file_names):
    exceptions = {}
    for source, destination in zip(source_file_names, destination_file_names):
      try:
        rel_source = self._parse_url(source)
        rel_destination = self._parse_url(destination)
        try:
          self._hdfs_client.rename(rel_source, rel_destination)
        except hdfs.HdfsError as e:
          raise BeamIOError(
              'libhdfs error in renaming %s to %s' % (source, destination), e)
      except Exception as e:  # pylint: disable=broad-except
        exceptions[(source, destination)] = e

    if exceptions:
      raise BeamIOError('Rename operation failed', exceptions)

"""
        Establishes a connection depending on the security mode set via config or environment variable.

        :return: a hdfscli InsecureClient or KerberosClient object.
        :rtype: hdfs.InsecureClient or hdfs.ext.kerberos.KerberosClient
        """
        connections = self.get_connections(self.webhdfs_conn_id)

        for connection in connections:
            try:
                self.log.debug('Trying namenode %s', connection.host)
                client = self._get_client(connection)
                client.status('/')
                self.log.debug('Using namenode %s for hook', connection.host)
                return client
            except HdfsError as hdfs_error:
                self.log.debug('Read operation on namenode %s failed with error: %s',
                               connection.host, hdfs_error)

        hosts = [connection.host for connection in connections]
        error_message = 'Read operations failed on the namenodes below:\n{hosts}'.format(
            hosts='\n'.join(hosts))
        raise AirflowWebHDFSHookException(error_message)

Returns:
            List of HDFS paths that satisfy the glob pattern.
        """
        prefix = _parse_glob_pattern(pattern) or "/"
        matched = set()
        try:
            for dpath, _, fnames in self.walk(prefix):
                if fnmatch(dpath, pattern):
                    matched.add(dpath)
                matched |= set(
                    "{}/{}".format(dpath, fname)
                    for fname in fnames
                    if fnmatch("{}/{}".format(dpath, fname), pattern)
                )
        except HdfsError:  # pragma: no cover
            # HdfsError is raised by `self.walk()` if prefix does not exist in HDFS.
            # Ignore and return an empty list.
            pass
        return sorted(matched)

def utimens(self, path, times=None):
        log.debug('utimens({}, {})'.format(path, times))

        full_path = self._full_path(path)

        at = int(times[0] * 1000)
        mt = int(times[1] * 1000)

        try:
            self.hdfs_client.set_times(full_path, access_time=at, modification_time=mt)
        except HdfsError as e:
            if e.exception == 'IOException':
                log.debug(e)
                raise FuseOSError(errno.ENOSYS)

        self._cache['last_cmd'] = 'utimens'
        return os.utime(self._full_path(path), times)

def rename(self, source_file_names, destination_file_names):
    exceptions = {}
    for source, destination in zip(source_file_names, destination_file_names):
      try:
        rel_source = self._parse_url(source)
        rel_destination = self._parse_url(destination)
        try:
          self._hdfs_client.rename(rel_source, rel_destination)
        except hdfs.HdfsError as e:
          raise BeamIOError(
              'libhdfs error in renaming %s to %s' % (source, destination), e)
      except Exception as e:  # pylint: disable=broad-except
        exceptions[(source, destination)] = e

    if exceptions:
      raise BeamIOError('Rename operation failed', exceptions)