Re: Reject WAIT FOR earlier in transaction-snapshot mode

From: Álvaro Herrera <alvherre(at)kurilemu(dot)de>
To: Sami Imseih <samimseih(dot)pg(at)gmail(dot)com>
Cc: Xuneng Zhou <xunengzhou(at)gmail(dot)com>, Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Reject WAIT FOR earlier in transaction-snapshot mode
Date: 2026-09-09 15:24:51
Message-ID: aqFqbW8Q82DcA3DQ@alvherre.pgsql
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Hi,

Not critically important but note that the PopActiveSnapshot and
InvalidateCatalogSnapshot call and the comment about "giving up if there
is still an active or registered snapshot" have a close relationship; I
think it would make sense to keep them together. I would add your new
test-and-ereport just before the PopActiveSnapshot() call, to avoid
breaking that.

Cheers

--
Álvaro Herrera 48°01'N 7°57'E — https://www.EnterpriseDB.com/
"Siempre hay que alimentar a los dioses, aunque la tierra esté seca" (Orual)

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