The warning message "
time constraints added on superuser role" is frequently logged in the database log.
For example:
2020-01-02 13:24:53.396844 CET,"gpadmin","postgres",p98792,th-1075087232,"[local]",,2020-01-02 13:24:53 CET,0,con6,,seg-1,,,,sx1,"WARNING","01000","time constraints added on superuser role",,,,,,,0,,"auth.c",2966,
2020-01-02 13:24:53.408259 CET,"gpadmin","template1",p98794,th-1075087232, "127.0.0.1","20770",2020-01-02 13:24:53 CET,0,con7,,seg-1,,,,sx1,"WARNING","01000"," time constraints added on superuser role",,,,,,,0,,"auth.c",2966,