Re: flood in logs

From: hubert depesz lubaczewski <depesz(at)depesz(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: flood in logs
Date: 2008-10-10 11:54:19
Message-ID: 20081010115419.GA13801@depesz.com
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On Fri, Oct 10, 2008 at 12:58:35PM +0200, Sebastian Pawłowski wrote:
> have you got any idea where do they come from? and how can i stop them? i
> was trying to solve the problem, but with no result
> i'm using:
> Ubuntu 8.04.1
> PostgreSQL 8.3.3 on x86_64-pc-linux-gnu, compiled by GCC cc (GCC) 4.2.3
> (Ubuntu 4.2.3-2ubuntu7)
> pgbouncer version 1.2.3

additional information:
1. postgresql from ubuntu packages:
$ dpkg -l | grep -E '(libpq|postgres)'
ii libpq-dev 8.3.3-0ubuntu0.8.04 header files for libpq5 (PostgreSQL library)
ii libpq5 8.3.3-0ubuntu0.8.04 PostgreSQL C client library
ii postgresql 8.3.3-0ubuntu0.8.04 object-relational SQL database (latest versi
ii postgresql-8.3 8.3.3-0ubuntu0.8.04 object-relational SQL database, version 8.3
ii postgresql-client 8.3.3-0ubuntu0.8.04 front-end programs for PostgreSQL (latest ve
ii postgresql-client-8.3 8.3.3-0ubuntu0.8.04 front-end programs for PostgreSQL 8.3
ii postgresql-client-common 87 manager for multiple PostgreSQL client versi
ii postgresql-common 87 PostgreSQL database-cluster manager
ii postgresql-contrib 8.3.3-0ubuntu0.8.04 additional facilities for PostgreSQL (latest
ii postgresql-contrib-8.3 8.3.3-0ubuntu0.8.04 additional facilities for PostgreSQL
ii postgresql-doc 8.3.3-0ubuntu0.8.04 documentation for the PostgreSQL database ma
ii postgresql-doc-8.3 8.3.3-0ubuntu0.8.04 documentation for the PostgreSQL database ma
ii postgresql-server-dev-8.3 8.3.3-0ubuntu0.8.04 development files for PostgreSQL 8.3 server-

and, i was able to determine that the problem occurs when i execute 'discard all' query - it is usually being run in our case by pgbouncer:

postgres=# DISCARD ALL;
WARNING: unrecognized node type: 742
DISCARD ALL

on another machine with the same packages - the problem doesn't exist.

what could be the reason behind it?

best regards,

depesz

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