Re: Handle concurrent drop when doing whole database vacuum

From: Nathan Bossart <nathandbossart(at)gmail(dot)com>
To: Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>
Cc: Michael Paquier <michael(at)paquier(dot)xyz>, cca5507 <cca5507(at)qq(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Jeff Davis <pgsql(at)j-davis(dot)com>
Subject: Re: Handle concurrent drop when doing whole database vacuum
Date: 2026-07-09 18:56:02
Message-ID: ak_uwjEzB-lAwAd3@nathan
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On Thu, Jul 09, 2026 at 11:49:24AM -0700, Bharath Rupireddy wrote:
> So I agree with using the _ext version for the ACL check when building the
> relations list for database-wide vacuum. It addresses the concurrent table
> drops issue. The v8 patch looks good to me.
>
> Also, I don't have a strong opinion on adding the Assert(missing_ok ||
> CheckRelationOidLockedByMe(relid, AccessShareLock, true)); because the
> is_missing flag in v8 already conveys whether the caller holds the relation
> lock or not: missing_ok = true means no lock held, missing_ok = false means
> the caller holds it.

Cool, I'll address everyone's feedback and get this committed in the next
few days.

--
nathan

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