On Tue, Aug 15, 2017 at 5:15 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > The idea of the existing > code seems to be "let's exercise what happens if the executor does > EnterParallelMode/ExitParallelMode around any plan whatsoever, even a > parallel-unsafe one"; which seems to me to be bogus as heck.
I think that is not what the current code is doing. If the plan is diagnosed as parallel-unsafe, then parallelModeOK will be false and nothing will happen. If the plan is actually parallel-unsafe but the planner doesn't *think* it's parallel-unsafe, then what you are talking about will happen, but that seems to me to be a good thing. It lets you find planner bugs (or functions that a user has labelled incorrectly). -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers