def _hdf5_yt_array_lite(fh, field):
    """
    Read an hdf5 dataset.  If that dataset has a "units" attribute,
    return that as well, but do not cast as a YTArray.
    """
    units = ''
    if 'units' in fh[field].attrs:
        units = fh[field].attrs['units']
    if units == 'dimensionless':
        units = ''
    return fh[field][()], units
