| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Robert Haas <robertmhaas(at)gmail(dot)com>, Melanie Plageman <melanieplageman(at)gmail(dot)com>, Peter Geoghegan <pg(at)bowt(dot)ie>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Noah Misch <noah(at)leadboat(dot)com> |
| Subject: | Re: Vacuum ERRORs out considering freezing dead tuples from before OldestXmin |
| Date: | 2024-07-23 00:37:14 |
| Message-ID: | 950881.1721695034@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Michael Paquier <michael(at)paquier(dot)xyz> writes:
> Sawada-san and John are the two ones in the best position to answer
> that. I'm not sure either how to force a second index pass, either.
Yeah, I think we've established that having some way to force that,
without using a huge test case, would be really desirable. Maybe
just provide a way to put an artificial limit on how many tuples
processed per pass?
(And no, I wasn't trying to rag on Melanie. My point here is that
we've failed to design-in easy testability of this code path, and
that's surely not her fault.)
regards, tom lane
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