Re: BUG #17368: Assert failed in GetSafeSnapshot() for SERIALIZABLE READ ONLY DEFERRABLE transaction

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: Alexander Lakhin <exclusion@gmail.com>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17368: Assert failed in GetSafeSnapshot() for SERIALIZABLE READ ONLY DEFERRABLE transaction
Date: Mon, 06 Mar 2023 18:42:20 -0500
Message-ID: <3766597.1678146140@sss.pgh.pa.us> (raw)
In-Reply-To: <CA+hUKGKYLSa4S7cMYgZXXA+cNTdr1COWtNj1HSc-Y62jwWmv7w@mail.gmail.com>
References: <17368-98a4f99e8e4b4402@postgresql.org>
	<18a116d2-7927-6a62-aa60-ab16c53183f9@gmail.com>
	<CA+hUKG+4m+fvnM_Czyp3Z_h4SaqmwR7sq9XE=k0GcaL_afEfUA@mail.gmail.com>
	<CA+hUKGKYLSa4S7cMYgZXXA+cNTdr1COWtNj1HSc-Y62jwWmv7w@mail.gmail.com>

Thomas Munro <thomas.munro@gmail.com> writes:
> As mentioned, this approach allows for more improvements in later
> patches.  There is absolutely no reason for transactions in separate
> databases to be in each others' possibleUnsafeConflicts lists.

What if they both touched/modified a shared catalog?

			regards, tom lane

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