Args:
        buf: the output of `dumps`.

def loads_msgpack(buf):
    """
    Args:
        buf: the output of `dumps`.
    """
    # Since 0.6, the default max size was set to 1MB.
    # We change it to approximately 1G.
    return msgpack.loads(buf, raw=False,
                         max_bin_len=MAX_MSGPACK_LEN,
                         max_array_len=MAX_MSGPACK_LEN,
                         max_map_len=MAX_MSGPACK_LEN,
                         max_str_len=MAX_MSGPACK_LEN)