Re: [HACKERS] [PATCH] Push limit to sort through a subquery

Buildfarm members with force_parallel_mode=regress are failing now.  I
haven't had a chance to investigate exactly what's going on here, but
I think there are probably several issues:

3. However, even if it did that, it would only affect the leader, not
the workers, because each worker will of course have a separate copy
of each executor state node.  We could fix that by having the Gather
or Gather Merge node also store the bound and propagate that to each
worker via DSM, and then have each worker call pass_down_bound itself.
(This would require a bit of refactoring of the API for
pass_down_bound, but it looks doable.)

In the short run, I'm not sure we have a better alternative than
removing this test - unless somebody has a better idea? - but it would
be good to work on all of the above problems.