Re: brin autosummarization -- autovacuum "work items"

Robert Haas wrote:
> On Tue, Mar 21, 2017 at 4:10 PM, Alvaro Herrera
>  wrote:
> > Well, the number of work items is currently fixed; but if you have many
> > BRIN indexes, then you'd overflow (lose requests).  By using DSA I am
> > making it easy to patch this afterwards so that an arbitrary number of
> > requests can be recorded.
> 
> But that could also use an arbitrarily large amount of memory, and any
> leaks will be cluster-lifespan.

Good point -- probably not such a great idea as presented.  The patch
only uses a fixed amount of memory currently, so it should be fine on
that front.  I think this is a good enough start.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services