| From: | "Andrey M(dot) Borodin" <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Peter Geoghegan <pg(at)bowt(dot)ie> |
| Cc: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Amcheck: do rightlink verification with lock coupling |
| Date: | 2020-07-20 18:46:47 |
| Message-ID: | 7C930872-733A-4993-AC52-66EF3E138ABD@yandex-team.ru |
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| Lists: | pgsql-hackers |
Hi!
> 23 янв. 2020 г., в 00:59, Peter Geoghegan <pg(at)bowt(dot)ie> написал(а):
>
> On Fri, Jan 17, 2020 at 5:43 PM Peter Geoghegan <pg(at)bowt(dot)ie> wrote:
>> I tried to come up with a specific example of how this could be
>> unsafe, but my explanation was all over the place (this could have had
>> something to do with it being Friday evening). Even still, it's up to
>> the patch to justify why it's safe, and that seems even more
>> difficult.
>
> I can't see a way around this problem, so I'm marking the patch rejected.
In this thread [0] we decided that lock coupling is necessary for btree_xlog_unlink_page().
So, maybe let's revive this patch?
Thanks!
Best regards, Andrey Borodin.
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