Re: Autovacuum and OldestXmin

Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> Simon Riggs wrote:
>> [Also there is a comment saying "this is a bug" in autovacuum.c
>> Are we thinking to go production with that phrase in the code?]

> Yeah, well, it's only a comment ;-)  The problem is that a worker can
> decide that a table needs to be vacuumed, if another worker has finished
> vacuuming it in the last 500 ms.  I proposed a mechanism to close the
> hole but it was too much of a hassle.

> Maybe we could remove the comment for the final release? :-)

What, you think we should try to hide our shortcomings?  There are
hundreds of XXX and FIXME comments in the sources.
        regards, tom lane