Re: getting rid of SnapshotNow - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: getting rid of SnapshotNow
Date
Msg-id 20130719165102.GB4130@eldon.alvh.no-ip.org
Whole thread Raw
In response to Re: getting rid of SnapshotNow  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: getting rid of SnapshotNow  (Robert Haas <robertmhaas@gmail.com>)
List pgsql-hackers
Robert Haas escribió:
> On Fri, Jul 19, 2013 at 12:29 PM, Alvaro Herrera
> <alvherre@2ndquadrant.com> wrote:

> > I think seeing otherwise invisible rows is useful in pgrowlocks.  It
> > helps observe the effects on tuples written by concurrent transactions
> > during experimentation.  But then, maybe this functionality belongs in
> > pageinspect instead.
>
> It does seem like it should be useful, at least as an option.  But I
> feel like changing that ought to be separate from getting rid of
> SnapshotNow.  It seems like too big of a behavior change to pass off
> as a harmless tweak.

Agreed.

--
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services


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