Re: autovacuum and immediate shutdown issues

On Mon, 2009-10-19 at 15:01 -0400, Tom Lane wrote:
> Brad Nicholson <bnichols@ca.afilias.info> writes:
> > autoanalyze will automatically analyze new tables when they don't have
> > stats.  It seems logical that it should handle this case where the table
> > also does not have stats.
>
> It will autoanalyze once a sufficient number of inserts have occurred.
> The effect of a crash is just to reset the inserts-since-last-analyze
> counters.  You really haven't made the case why that's so awful that
> we need to do things that are unpleasant along other dimensions in order
> to avoid it.  (The only ways of avoiding it that I can see would result
> in very significant overhead added to the stats collection mechanism.)

What about the question that Scott and I both asked - what about query
plans.  Will they be affected?

If so, you could have a table that does not get updated, that no longer
generates relevant query plans, and won't until manual intervention.

--
Brad Nicholson  416-673-4106
Database Administrator, Afilias Canada Corp.