| From: | Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com> |
|---|---|
| To: | "tsunakawa(dot)takay(at)fujitsu(dot)com" <tsunakawa(dot)takay(at)fujitsu(dot)com> |
| Cc: | Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Muhammad Usama <m(dot)usama(at)gmail(dot)com>, Masahiro Ikeda <ikedamsh(at)oss(dot)nttdata(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, amul sul <sulamul(at)gmail(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Álvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Ildar Musin <ildar(at)adjust(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, Chris Travers <chris(dot)travers(at)adjust(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tatsuo Ishii <ishii(at)sraoss(dot)co(dot)jp> |
| Subject: | Re: Transactions involving multiple postgres foreign servers, take 2 |
| Date: | 2020-10-19 11:37:24 |
| Message-ID: | CAExHW5u91OT7Jq2CDbpDPU-sbMPD0scdcm3Zd02Ww6xD_P393A@mail.gmail.com |
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On Mon, Oct 19, 2020 at 2:37 PM tsunakawa(dot)takay(at)fujitsu(dot)com
<tsunakawa(dot)takay(at)fujitsu(dot)com> wrote:
>
> Really. I thought we were talking about canceling commits with Ctrl + C as you referred, right? I couldn't imagine, in production environments where many sessions are running transactions concurrently, how the user (DBA) wants and can cancel each stuck session during commit one by one with Ctrl + C by hand. I haven't seen such a feature exist or been considered crucial that enables the user (administrator) to cancel running processing with Ctrl + C from the side.
Using pg_cancel_backend() and pg_terminate_backend() a DBA can cancel
running query from any backend or terminate a backend. For either to
work the backend needs to be interruptible. IIRC, Robert had made an
effort to make postgres_fdw interruptible few years back.
--
Best Wishes,
Ashutosh Bapat
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