daveg wrote:
Apologies if this is old news, but pg_autovacuum in 8.0.x has the bad habit
of SEGVing and exiting when a table gets dropped out from under it. This
creates problems if you rely on pg_autovacuum for the bulk of your vacuuming
as it forgets it's statistics when it is restarted and so will skip some
desireable vacuums.
I have a patch for this that should apply against any 8.0.x if there is any
interest.
Please post the patch, it might get committed into 8.0.x. I personally
haven't heard any other reports of it dieing when tables are dropped,
but I don't doubt there are some lingering issues like this.
I looked at the new autovacuum in 8.1 and it appears from casual inspection
not to have the same problem.
The autovacuum in 8.1 is a very different critter. While its design is
based on the contrib autovacuum, it is mostly a total rewrite, and
probably a vast improvement :-)
Matt
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