Horton

RE: Potential data loss due to race condition during logical replication slot creation

Hayato Kuroda (Fujitsu) <kuroda.hayato@fujitsu.com>

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From: "Hayato Kuroda (Fujitsu)" <kuroda.hayato@fujitsu.com>
To: 'Amit Kapila' <amit.kapila16@gmail.com>
Cc: Masahiko Sawada <sawada.mshk@gmail.com>, "Callahan, Drew" <callaan@amazon.com>, "pgsql-bugs@lists.postgresql.org" <pgsql-bugs@lists.postgresql.org>
Date: 2024-03-19T04:39:30Z
Lists: pgsql-bugs

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Dear Amit,

> 
> Won't it be possible to achieve the same thing if we just save
> (serialize) the highest xid among all running xacts?
>

Indeed, here is an updated version.
Since the array in xl_running_xact is not ordered, entries of it must be seeked
and found the highest one.

Best Regards,
Hayato Kuroda
FUJITSU LIMITED
https://www.fujitsu.com/

Commits

  1. Fix possibility of logical decoding partial transaction changes.