after fetch some disccusion about this revert, i have some question as follow:
1. i understand that anti-wraparound and no-aggressive autovacuum will be skipped for shared catalog tables, but why this can trigger autovacuum does not work for others tables ?
2. "this could cause autovacuum to lock down", this lock down implict that autovacuum can make a dead lock problem ?
3. how to reproduce this lock down or autovacuum invalid issue, must be cluster enviroment ?
so is there any body know these issuse or commits can give me some suggestion about my confusion.