curious regression failures (was Re: [PATCHES] PL/TCL Patch to prevent postgres from becoming multithreaded)

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
Cc: pgsql-hackers(at)postgreSQL(dot)org, Andrew Dunstan <andrew(at)dunslane(dot)net>
Subject: curious regression failures (was Re: [PATCHES] PL/TCL Patch to prevent postgres from becoming multithreaded)
Date: 2007-09-19 15:14:20
Message-ID: 20616.1190214860@sss.pgh.pa.us
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Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> writes:
> Tom Lane wrote:
>> Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> writes:
>>> ! ERROR: could not read block 2 of relation 1663/16384/2606: read only 0 of 8192 bytes
>>
>> Is that repeatable? What sort of filesystem are you testing on?
>> (soft-mounted NFS by any chance?)

> doesn't seem to be repeatable :-(

Hmm ...
http://www.pgbuildfarm.org/cgi-bin/show_log.pl?nm=luna_moth&dt=2007-09-19%2013:10:01

Exact same error --- is it at the same place in the tests where you saw it?

Now that I think about it, there have been similar transient failures
("read only 0 of 8192 bytes") in the buildfarm before. It would be
helpful to collect a list of exactly which build reports contain
that string, but AFAIK there's no very easy way to do that; Andrew,
any suggestions?

regards, tom lane

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