On Fri, Jan 19, 2018 at 8:44 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> Right, but I think using parallel_leader_participation, you can do it
> reliably and probably write some regression tests which can complete
> in a predictable time.
Do what reliably? Guarantee that the leader will not participate as a
worker, but that workers will be used? If so, yes, you can get that.
The only issue is that you may not be able to launch parallel workers
due to hitting a limit like max_parallel_workers, in which case you'll
get a serial index build despite everything. Nothing we can do about
that, though.
--
Peter Geoghegan