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Re: crash in plancache with subtransactions

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: crash in plancache with subtransactions
Date: 2010-10-29 20:28:11
Message-ID: 1288383478-sup-8441@alvh.no-ip.org (view raw or flat)
Thread:
Lists: pgsql-hackers
Excerpts from Tom Lane's message of vie oct 29 12:54:52 -0300 2010:
> Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:

> > I tried the original test cases that were handed to me (quite different
> > from what I submitted here) and they are fixed also.  Thanks.
> 
> It'd be interesting to know if there's any noticeable slowdown on
> affected real-world cases.  (Of course, if they invariably crashed
> before, there might not be a way to measure their previous speed...)

Yeah, the cases that were reported failed with one of

ERROR: invalid memory alloc request size 18446744073482534916
ERROR: could not open relation with OID 0
ERROR: buffer 228 is not owned by resource owner Portal

-- 
Álvaro Herrera <alvherre(at)commandprompt(dot)com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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