Re: GSoC proposal - "make an unlogged table logged"

On Fri, Mar 7, 2014 at 12:36 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> =?ISO-8859-1?Q?Fabr=EDzio_de_Royes_Mello?= <fabriziomello(at)gmail(dot)com>
writes:
> > Do you think is difficult to implement "ALTER TABLE ... SET UNLOGGED"
too?
> > Thinking in a scope of one GSoC, of course.
>
> I think it's basically the same thing. You might hope to optimize it;
> but you have to create (rather than remove) an init fork, and there's
> no way to do that in exact sync with the commit. So for safety I think
> you have to copy the data into a new relfilenode.
>

Well, the same thing that 'vacuum full' does, but changing relpersistence
to RELPERSISTENCE_UNLOGGED for the new relfilenode. Is this?

Regards,

--
Fabrízio de Royes Mello
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