Re: hashagg slowdown due to spill changes

On Sun, 2020-06-14 at 11:14 -0700, Andres Freund wrote:
> I'm somewhat inclined to think that we should revert 4cad2534da6 and
> then look at how precisely to tackle this in 14.

I'm fine with that.

> It'd probably make sense to request small tlists when the number of
> estimated groups is large, and not otherwise.

That seems like a nice compromise that would be non-invasive, at least
for create_agg_plan().

Regards,
    Jeff Davis