Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> Szima Gbor wrote:
>> At system crash or poweroff the autovacuum statistics will be lost,
> I don't remember why it was that we made the stat file be dropped on
> crash recovery, but there was a reason.
The fact that it's not WAL-backed and hence couldn't be trusted. But
I think he's complaining about the contrib version of autovacuum anyway.
regards, tom lane