Re: BUG #8434: Why does dead lock occur many times ?

From: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
To: Tomonari Katsumata <t(dot)katsumata1122(at)gmail(dot)com>
Cc: OTSUKA Kenji <otsuka(dot)knj(at)gmail(dot)com>, pgsql-bugs(at)postgresql(dot)org, Tomonari Katsumata <katsumata(dot)tomonari(at)po(dot)ntts(dot)co(dot)jp>
Subject: Re: BUG #8434: Why does dead lock occur many times ?
Date: 2013-09-28 01:47:06
Message-ID: 20130928014706.GG4832@eldon.alvh.no-ip.org
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Hi,

Sorry I hadn't noticed this thread.

Tomonari Katsumata escribió:

> It seems to be related to some changes in
> the [Improve concurrency of foreign key locking] commit(*).
> (*) commitid : 0ac5ad5134f2769ccbaefec73844f8504c4d6182
> Because I could not reproduce "dead lock" before the commit.

Yes, sounds pretty likely.

> And I'm thinking that also this commit is related to BUG#8470.

Yes, I replied to that thread because I suspect the same.

> If so, I hope Alvaro will find the solution for this problem.

I will take a look at this problem next week.

--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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