Re: pg9.6 segfault using simple query (related to use fk for join estimates)

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Julien Rouhaud <julien(dot)rouhaud(at)dalibo(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Stefan Huehner <stefan(at)huehner(dot)org>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg9.6 segfault using simple query (related to use fk for join estimates)
Date: 2016-05-06 19:06:01
Message-ID: CA+TgmobPqrAVXOBMHTcpDq8hX7gCzcVhoUvC8s9V=d09+bt30w@mail.gmail.com
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On Thu, May 5, 2016 at 10:48 AM, David Rowley
<david(dot)rowley(at)2ndquadrant(dot)com> wrote:
> On 5 May 2016 at 16:04, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> wrote:
>> I've started making some improvements to this, but need to talk to
>> Tomas. It's currently in the middle of his night, but will try to
>> catch him in his morning to discuss this with him.
>
> Ok, so I spoke to Tomas about this briefly, and he's asked me to send
> in this patch. He didn't get time to look over it due to some other
> commitments he has today.
>
> I do personally feel that if the attached is not good enough, or not
> very close to good enough then probably the best course of action is
> to revert the whole thing.

Tom, what do you think about this patch? Is it good enough, or should
we revert the whole thing?

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

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