def break_s3_file_uri(fully_qualified_file):
    """
    :param fully_qualified_file: in form s3://{0}/{1}/{2}
    where {0} is bucket name, {1} is timeperiod and {2} - file name
    :return: tuple (s3://{0}, {1}/{2})
    """
    tokens = fully_qualified_file.rsplit('/', 2)
    return tokens[0], '{0}/{1}'.format(tokens[1], tokens[2])