def METHOD_NAME(filename, hadoop_bin=None, fs_name=None, fs_ugi=None):
    """hadoop open gz file"""
    hadoop_bin, fs_name, fs_ugi = parse_account(hadoop_bin, fs_name, fs_ugi)
    filename = check_hadoop_path(filename, hadoop_bin, fs_name, fs_ugi)
    cmd = make_base_cmd(hadoop_bin, fs_name, fs_ugi)
    cmd += " -text %s" % filename
    cmd += " 2>%s" % ERR_LOG
    p = os.popen(cmd)
    return p