Re: ddd

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>, tcook(at)blackducksoftware(dot)com, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>
Subject: Re: ddd
Date: 2017-12-21 15:18:05
Message-ID: CA+TgmoaATbCPrzkPWCatGZuOOGis_h-8VwAK9Pbgv4tkG4qwrg@mail.gmail.com
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Great subject line!

On Thu, Dec 21, 2017 at 9:31 AM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> I think both I and commit e9baa5e9fa147e are confused.
>
> By my reading this is the fault of e9baa5e9fa147e [3]. Robert, Haribabu
> any idea?

If I run the regression tests with force_parallel_mode=on prior to the
parallel hash join patch, they pass. If I run them now, they fail
inside the parallel hash join tests here:

create table wide as select generate_series(1, 2) as id, rpad('',
320000, 'x') as t;

I'm guessing that test case would have failed before, too, but we
didn't have it. I'll analyze this further in a bit.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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  • ddd at 2017-12-21 14:31:06 from Andres Freund

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