Amit Kapila <amit.kapil...@gmail.com> writes: > On Thu, Jul 7, 2016 at 1:23 PM, Fujii Masao <masao.fu...@gmail.com> wrote: >> I found $SUBJECT while trying to test parallel queries. Is this a bug?
Presumably the instrumentation data needed for that is not getting returned from the worker to the leader. I would bet there's a lot of other plan-node-specific data that doesn't work either. > I think this can never happen for force_parallel_mode TO off, because > we don't generate a gather on top of sort node. The reason why we are > able to push Sort below gather, because it is marked as parallel_safe > (create_sort_path). I think we should not mark it as parallel_safe. That seems rather ridiculous. An oversight in managing EXPLAIN data is not a sufficient reason to cripple parallel query. regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers