Re: [HACKERS] Parallel tuplesort (for parallel B-Tree index creation)

On Fri, Jan 26, 2018 at 10:33 AM, Robert Haas <robertmhaas@gmail.com> wrote:
> I'm busy with other things, so no rush.

Got it.

There is one question that I should probably get clarity on ahead of
the next revision, which is: Should I rip out the code that disallows
a "degenerate parallel CREATE INDEX" when
parallel_leader_participation=off, or should I instead rip out any
code that deals with parallel_leader_participation, and always have
the leader participate as a worker?

If I did the latter, then leader non-participation would live on as a
#define debug option within nbtsort.c. It definitely seems like we'd
want to preserve that at a minimum.

-- 
Peter Geoghegan