| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Stas Kelvich <s(dot)kelvich(at)postgrespro(dot)ru> |
| Cc: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: logical decoding of two-phase transactions |
| Date: | 2017-04-04 17:31:33 |
| Message-ID: | 20170404173133.olo7keeh3dzhriay@alap3.anarazel.de |
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| Lists: | pgsql-hackers |
On 2017-04-04 13:06:13 +0300, Stas Kelvich wrote:
> That is just argument against Andres concern that prepared transaction
> is able to deadlock with decoding process — at least no such cases in
> regression tests.
There's few longer / adverse xacts, that doesn't say much.
> And that concern is main thing blocking this patch. Except explicit catalog
> locks in prepared tx nobody yet found such cases and it is hard to address
> or argue about.
I doubt that's the case. But even if it were so, it's absolutely not
acceptable that a plain user can cause such deadlocks. So I don't think
this argument buys you anything.
- Andres
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