From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
---|---|
To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Greg Stark <gsstark(at)mit(dot)edu>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: remove flatfiles.c |
Date: | 2009-09-02 02:58:46 |
Message-ID: | 20090902025846.GD7243@alvh.no-ip.org |
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Thread: | |
Lists: | pgsql-hackers |
Robert Haas escribió:
> On Tue, Sep 1, 2009 at 7:42 PM, Tom Lane<tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > But trying to VACUUM FULL that table is going to be horridly painful
> > too, and you'll still have bloated indexes afterwards. You might as
> > well just live with the 50% waste, especially since if you did a
> > full-table update once you'll probably do it again sometime.
> >
> > I'm having a hard time believing that VACUUM FULL really has any
> > interesting use-case anymore.
>
> What if your large table doesn't have an index? Then there's no way to cluster.
But there's nothing saying we cannot provide a version of CLUSTER that
does not follow any index and just copies the live tuples.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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