| From: | Michael Paquier <michael(at)paquier(dot)xyz> |
|---|---|
| To: | Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Andres Freund <andres(at)anarazel(dot)de> |
| Subject: | Re: Assertion failure on PG15 with modified test_shm_mq test |
| Date: | 2022-08-17 06:02:28 |
| Message-ID: | YvyEdCRGQFG0soSn@paquier.xyz |
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| Lists: | pgsql-hackers |
On Wed, Aug 17, 2022 at 11:15:28AM +0530, Pavan Deolasee wrote:
> I notice that pgstat_shutdown_hook() is registered as a before-shmem-exit
> callback. The callback is responsible for detaching from the pgstat shared
> memory segment. But looks like other parts of the system still expect it to
> be available during later stages of proc exit.
>
> It's not clear to me if pgstat shutdown should happen later or code that
> gets executed later in the cycle should not try to use pgstat. It's also
> entirely possible that my usage of SharedFileSet is completely wrong. If
> that's the case, please let me know the mistake in the usage.
That's visibly an issue with shared memory and the stats. I have
added an open item. Andres?
--
Michael
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