On Wed, Jul 17, 2019 at 12:44 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > #11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
> > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
> > #12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
> > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
>
> https://github.com/postgres/postgres/blob/REL9_6_STABLE/src/backend/executor/nodeLimit.c#L139
>
> Limit thinks it's OK to "shut down" the subtree, but if you shut down a
> Gather node you can't rescan it later because it destroys its shared
> memory. Oops. Not sure what to do about that yet.
CCing Amit and Robert, authors of commits 19df1702 and 69de1718.
--
Thomas Munro
https://enterprisedb.com