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Re: try_relation_open and relation_open behave different.

Alvaro Herrera <alvherre@alvh.no-ip.org>

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From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: Xing GUO <higuoxing@gmail.com>
Cc: Michael Paquier <michael@paquier.xyz>, pgsql-hackers@postgresql.org
Date: 2021-10-18T13:44:24Z
Lists: pgsql-hackers 
On 2021-Oct-18, Xing GUO wrote:

> However, I can open an "uncommitted" relation using relation_open() and
> cannot open it using try_relation_open().
> Since Postgres doesn't write the "uncommitted" relation descriptor to
> SysCache and try_relation_open() checks if the
> relation exists in SysCache while relation_open() doesn't check it.

Hmm, is it sufficient to do CommandCounterIncrement() after your
"uncommitted" relation change and the place where you do
try_relation_open()?

-- 
Álvaro Herrera              Valdivia, Chile  —  https://www.EnterpriseDB.com/
"Linux transformó mi computadora, de una `máquina para hacer cosas',
en un aparato realmente entretenido, sobre el cual cada día aprendo
algo nuevo" (Jaime Salinas)

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  1. Detect POLLHUP/POLLRDHUP while running queries.