Re: Adding REPACK [concurrently]

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Antonin Houska <ah(at)cybertec(dot)at>
Cc: Mihail Nikalayeu <mihailnikalayeu(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Robert Treat <rob(at)xzilla(dot)net>
Subject: Re: Adding REPACK [concurrently]
Date: 2026-03-16 12:21:08
Message-ID: 202603161220.7nv6whwu33hi@alvherre.pgsql
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On 2026-Mar-16, Antonin Houska wrote:

> One more problem related to the replication slot is that, due to the call of
> CheckSlotPermissions() in setup_logical_decoding(), REPLICATION privilege is
> required for REPACK (CONCURRENTLY) to run. That's not too user-friendly.
>
> I think the reason to require the REPLICATION privilege is that, in generic
> case, the output plugin can access data of any table in the database. However
> REPACK uses one particular plugin and that plugin only decodes changes of one
> particular table. Thus I think we don't really need to call
> CheckSlotPermissions(). Do I seem to miss something?

Yeah, I don't think it makes sense to require REPLICATION privilege to
run REPACK.

--
Álvaro Herrera 48°01'N 7°57'E — https://www.EnterpriseDB.com/
"Oh, great altar of passive entertainment, bestow upon me thy discordant images
at such speed as to render linear thought impossible" (Calvin a la TV)

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