Re: Vacuum ERRORs out considering freezing dead tuples from before OldestXmin - Mailing list pgsql-hackers

From Peter Geoghegan
Subject Re: Vacuum ERRORs out considering freezing dead tuples from before OldestXmin
Date
Msg-id CAH2-Wznj6N4R8w1N6TRJwF0TCBUekgSYS1TVXjH5mpkCO8H=WA@mail.gmail.com
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In response to Re: Vacuum ERRORs out considering freezing dead tuples from before OldestXmin  (Andres Freund <andres@anarazel.de>)
List pgsql-hackers
On Mon, Jul 22, 2024 at 2:13 PM Andres Freund <andres@anarazel.de> wrote:
> It's hard by now (i.e. 17+) because you need substantial amounts of rows to be
> able to trigger it which makes it a hard fight to introduce.

I didn't think that it was particularly hard when I tested the test
that Melanie committed.

> And the cost of
> setting the GUC limit lower is essentially zero.

Apparently you know more about TID Store than me.

If it really is trivial to lower the limit, then I have no objections
to doing so. That would make it easy to fix the test flappiness issues
by just using the much lower limit.

--
Peter Geoghegan



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