Re: why do we need two snapshots per query?

From: Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Dimitri Fontaine <dimitri(at)2ndquadrant(dot)fr>, Florian Pflug <fgp(at)phlo(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: why do we need two snapshots per query?
Date: 2011-12-16 16:53:58
Message-ID: 87iplgmp95.fsf@hi-media-techno.com
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Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> I thought about adjusting it, but I didn't see what it made sense to
> adjust it to. It still is the parameter used for parameter I/O and
> parsing/planning, so the existing text isn't wrong. It will possibly
> also get reused for execution, but the previous statement has a
> lengthy comment on that, so it didn't seem worth recapitulating here.

Ah yes, the previous comment is not far away, so it's easy to read it
that way. Agreed.

> Actually, I did, but the change was in the second patch file attached
> to the same email, which maybe you missed? Combined patch attached.

Oops, I missed it, yes. Looks good to me.

Regards,
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support

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