Horton

Re: out-of-order XID insertion in KnownAssignedXids

Michael Paquier <michael@paquier.xyz>

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From: Michael Paquier <michael@paquier.xyz>
To: Konstantin Knizhnik <k.knizhnik@postgrespro.ru>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2018-10-08T09:14:51Z
Lists: pgsql-hackers 
On Mon, Oct 08, 2018 at 12:04:28PM +0300, Konstantin Knizhnik wrote:
> The simplest way to fix the problem is to ignore duplicates before adding
> them to KnownAssignedXids.
> We in any case perform sort i this place...

I may of course be missing something, but shouldn't we not have
duplicates in the first place?
--
Michael

Commits

  1. Avoid duplicate XIDs at recovery when building initial snapshot