Re: pgsql: Fix accounting of memory needed for merge heap.

On Thu, Dec 8, 2016 at 12:20 AM, Heikki Linnakangas
<heikki.linnakangas@iki.fi> wrote:
> While we're at it, add a safeguard for the case that we are already over
> the limit when allocating the read buffers. That shouldn't happen, but
> better safe than sorry.

I think you should 's/Min/Max/' where the new limit is applied. Also
suggest that the subsequent USEMEM() call have
"state->read_buffer_size * numInputTapes" as its argument, rather than
state->availMem, just to be neat.

Thanks
--
Peter Geoghegan