def METHOD_NAME(aggregator, instance, dd_run_check):
    instance['client_lib_log_level'] = 'DEBUG'
    vertica_default_log = os.path.join(os.path.dirname(common.HERE), 'vertica_python.log')
    if os.path.exists(vertica_default_log):
        os.remove(vertica_default_log)
    check = VerticaCheck('vertica', {}, [instance])
    dd_run_check(check)
    assert not os.path.exists(vertica_default_log)