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Re: thousand unrelated data files in pg_default tablespace

From: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: thousand unrelated data files in pg_default tablespace
Date: 2010-09-03 11:00:31
Message-ID: 4C80D54F.4060003@enterprisedb.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On 03/09/10 11:16, Pavel Stehule wrote:
> 2010/8/31 Tom Lane<tgl(at)sss(dot)pgh(dot)pa(dot)us>:
>> Pavel Stehule<pavel(dot)stehule(at)gmail(dot)com>  writes:
>>> there is a dump from 8KB files
>>
>> Well, those certainly look like tables/indexes not temp files.
>> So we can rule out one theory.
>>
>> You're *certain* these aren't referenced from pg_class.relfilenode
>> of any of the databases in the server?
>
> I have a info, so these files are not in pg_class.relfilenode. More -
> these files are three months old, and in this time was server two
> times restarted.

Maybe they're tables that were created in a transaction, but the process 
crashed hard before committing? Like:

BEGIN;
CREATE TABLE foo (...);
COPY foo FROM ...;
kill -9 postgres

That will leave behind a file like that. Do you do something like that 
in the application?

-- 
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com

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Next:From: Heikki LinnakangasDate: 2010-09-03 11:19:20
Subject: Streaming a base backup from master
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