Horton

Re: getting rid of SnapshotNow

Alvaro Herrera <alvherre@2ndquadrant.com>

View thread
From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Noah Misch <noah@leadboat.com>, pgsql-hackers@postgresql.org, pgsql-odbc@postgresql.org
Date: 2013-07-19T16:51:02Z
Lists: 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