Re: [sqlsmith] Failed assertion in create_gather_path
Andreas Seltenreich <seltenreich@gmx.de>
From: Andreas Seltenreich <seltenreich@gmx.de>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>, pgsql-hackers@postgresql.org
Date: 2018-04-07T18:56:22Z
Lists: pgsql-hackers
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.
Commits
-
Prevent generation of bogus subquery scan paths.
- dc1057fcd878 11.0 landed
-
Let Parallel Append over simple UNION ALL have partial subpaths.
- 0927d2f46ddd 11.0 cited