From: Thorsten Schöning <tschoening@am-soft.de>
To: pgsql-admin@lists.postgresql.org
Subject: Re: What's the dfifference between pg_start_backup+copy+pg_stop_backup+WAL vs. pg_start_backup+pg_stop_backup+copy+WAL?
Date: Fri, 23 Jul 2021 21:15:17 +0200
Message-ID: <1837868909.20210723211517@am-soft.de> (raw)
In-Reply-To: <6780C96C-3016-47C8-AD06-BF860283266C@elevated-dev.com>
References: <1208702063.20210723115638@am-soft.de>
<399c734c5b9ffe10f68bcb79a69bea000d8d0c21.camel@cybertec.at>
<1751752722.20210723161202@am-soft.de>
<20210723152418.GK20766@tamriel.snowman.net>
<562203777.20210723194435@am-soft.de>
<6780C96C-3016-47C8-AD06-BF860283266C@elevated-dev.com>
Guten Tag Scott Ribe,
am Freitag, 23. Juli 2021 um 20:07 schrieben Sie:
> Because it is in the file. WAL can re-do changes, it cannot undo them.
But isn't visibility of rows associated to transaction numbers as
well? I would have expected the transaction number for the row in B
simply not being available, because it was never part of the WALs up
to and including pg_stop_backup when not following the official
ordering of commands. So I expected that row to simply not be visible
at all and vacuumed at some point or whatever.
Mit freundlichen Grüßen
Thorsten Schöning
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To: pgsql-admin@postgresql.org
Cc: tschoening@am-soft.de, pgsql-admin@lists.postgresql.org
Subject: Re: What's the dfifference between pg_start_backup+copy+pg_stop_backup+WAL vs. pg_start_backup+pg_stop_backup+copy+WAL?
In-Reply-To: <1837868909.20210723211517@am-soft.de>
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