| From: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
|---|---|
| To: | Bartosz Polnik <bartoszpolnik(at)gmail(dot)com> |
| Cc: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: BUG #15577: Query returns different results when executed multiple times |
| Date: | 2019-01-07 19:59:18 |
| Message-ID: | CAEepm=15_MWhhp-Pg6rW1whuXrBTJ-gM=w+2t-Qk-VQHgniG0w@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Tue, Jan 8, 2019 at 1:56 AM Bartosz Polnik <bartoszpolnik(at)gmail(dot)com> wrote:
> I've modified the script:
> 1. I Added SET force_parallel_mode = on;:
What if you try that with your original query in the database that
shows the problem? Or alternatively SET parallel_leader_participation
= on. What I'm wondering is whether the parallel worker is
consistently getting the same result, but it's a different result from
the leader, and the variation comes from the race between leader and
worker, or whether the instability comes from somewhere else.
--
Thomas Munro
http://www.enterprisedb.com
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