From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
---|---|
To: | "Zhijie Hou (Fujitsu)" <houzj(dot)fnst(at)fujitsu(dot)com> |
Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Jeff Davis <pgsql(at)j-davis(dot)com>, Alexander Lakhin <exclusion(at)gmail(dot)com> |
Subject: | Re: Non-superuser subscription owners |
Date: | 2023-06-14 02:11:01 |
Message-ID: | CAA4eK1KXug_ftiQpPMgYGZdNoqLF34fZcbgLHhpzzTTppQgTvQ@mail.gmail.com |
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Lists: | pgsql-hackers |
On Tue, Jun 13, 2023 at 2:25 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> On Fri, May 12, 2023 at 3:28 PM Zhijie Hou (Fujitsu)
> <houzj(dot)fnst(at)fujitsu(dot)com> wrote:
> >
> >
> > I can reproduce this via gdb following similar steps in [1].
> >
> > I think we need to move this call into a transaction as well and here is an attempt
> > to do that.
> >
>
> I am able to reproduce this issue following the steps mentioned by you
> and the proposed patch to fix the issue looks good to me.
>
Today, again looking at the patch, it seems to me that it would be
better if we can fix this without starting a new transaction. Won't it
be better if we move this syscall to a place where we are fetching
relstate (GetSubscriptionRelState()) a few lines above? I understand
by doing that in some cases like when copy_data = false, we may do
this syscall unnecessarily but OTOH, starting a new transaction just
for a syscall (superuser_arg()) also doesn't seem like a good idea to
me.
--
With Regards,
Amit Kapila.
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