At some places, I have observed that we are adding a partial path even when rel's consider_parallel is false. Due to this, the partial path added has parallel_safe set to false and then later in create_gather_path() assertion fails.
Attached patch to fix that.
On Sun, Apr 8, 2018 at 12:26 AM, Andreas Seltenreich <seltenreich@gmx.de> wrote:
Tom Lane writes: > Alvaro Herrera <alvherre@alvh.no-ip.org> writes: >> Andreas Seltenreich wrote: >>> as of 039eb6e92f: >>> TRAP: FailedAssertion("!(subpath->parallel_safe)", File: "pathnode.c", Line: 1813) > >> Uh, that's pretty strange -- that patch did not touch the planner at >> all, and the relcache.c changes are pretty trivial. > > I don't think Andreas meant that the bug is necessarily new in 039eb6e92f, > only that that's the version he happened to be testing.
Right. I'm not testing often enough yet to be able to report on commit granularity :-). I'll try for a less ambiguos wording in future reports.
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Jeevan Chalke Technical Architect, Product Development EnterpriseDB Corporation The Enterprise PostgreSQL Company
