def _get_footer_size(fo):
    fo.seek(-8, 2)
    tup = struct.unpack("<i", fo.read(4))
    return tup[0]
Readers the footer size in bytes, which is serialized as little endian
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/parquet-python/parquet/__init__.py/_get_footer_size