From: | Emmanuel Cecchet <manu(at)asterdata(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Kenneth Marshall <ktm(at)rice(dot)edu>, Emmanuel Cecchet <Emmanuel(dot)Cecchet(at)asterdata(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Union test case broken in make check? |
Date: | 2009-11-20 14:47:39 |
Message-ID: | 4B06AC0B.40605@asterdata.com |
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Lists: | pgsql-hackers |
Tom Lane wrote:
> Kenneth Marshall <ktm(at)rice(dot)edu> writes:
>
>> Without an order by, the order is not defined.
>>
>
> Yeah, but with the same data and the same software it should generally
> give the same result; as evidenced by the fact that these same
> regression tests have worked for most people for years. There's
> something odd happening on Emmanuel's machine. Maybe he's changed
> the hashing algorithms or some planner cost parameters?
>
I did not change anything to Postgres and I can reproduce the problem
with a vanilla checkout of HEAD. However, I think I started to see the
problem since my last VMWare and OS upgrade (unfortunately I did both
simultaneously).
For info, I am using VMWare Workstation v6.5.3 build-185404 on Vista
6.0.60002 SP2. The VM is an Ubuntu 9.04 (Jaunty) with a 2.6.28-16 SMP
kernel on x86_64 (2 cores available for the VM, 4 cores total). gcc is
4.3.3 (Ubuntu 4.3.3-5ubuntu4).
Let me know if you need additional info about my setup.
Emmanuel
--
Emmanuel Cecchet
Aster Data
Web: http://www.asterdata.com
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