Re: vac_truncate_clog()'s bogus check leads to bogusness

From: Andres Freund <andres(at)anarazel(dot)de>
To: Noah Misch <noah(at)leadboat(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: vac_truncate_clog()'s bogus check leads to bogusness
Date: 2023-06-24 01:48:13
Message-ID: 20230624014813.zoda2igmbqiktdry@awork3.anarazel.de
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Hi,

On 2023-06-23 18:41:58 -0700, Andres Freund wrote:
> I guess this might be caused by 78db307bb23 adding the check, but using
> GetOldestXmin(NULL, true) to determine lastSaneFrozenXid. That was changed
> soon after, in 87f830e0ce03.

FWIW, the discussion leading up to 87f830e0ce03 is
https://postgr.es/m/4182.1405961004%40sss.pgh.pa.us

Greetings,

Andres Freund

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