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From: Etsuro Fujita <[email protected]>
To: Michael Paquier <[email protected]>
Cc: Fujii Masao <[email protected]>
Cc: Etsuro Fujita <[email protected]>
Cc: [email protected]
Subject: Re: pgsql: postgres_fdw: Inherit the local transaction's access/deferrable
Date: Thu, 5 Mar 2026 09:04:51 +0900
Message-ID: <CAPmGK14uMcr522jWFWjjwO2-71J7x0OaJfroyqmO+bUnCd5dOw@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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On Mon, Feb 16, 2026 at 10:15 AM Michael Paquier <[email protected]> wrote:
> On Sun, Feb 15, 2026 at 05:40:13PM +0900, Etsuro Fujita wrote:
> > This patch 1) modifies postgres_fdw so that it opens remote
> > transactions in read-only mode if the corresponding local transaction
> > is read-only, as noted in the documentation, but 2) keeps the existing
> > behavior of login triggers that they can write even if the invoking
> > transaction is read-only.  So declaring a transaction as read-only on
> > the local side doesn't mean it blocks all write operations on the
> > remote side; it still allows login triggers invoked on the remote side
> > to write.  Considering typical use-cases of such triggers, this seems
> > reasonable to me.  I think it might be a good idea to add a note about
> > it to the documentation, though.
> >
> > I'd like to re-propose this patch for v19, as mentioned in this thread.
>
> Considering again that for v19 sounds like a sensible thing to do.
> Before feature freeze, not after.  :D

Will do.

Best regards,
Etsuro Fujita

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