Re: [GSoC2014] Patch ALTER TABLE ... SET LOGGED

On Mon, Jul 21, 2014 at 9:51 AM, Andres Freund <andres(at)2ndquadrant(dot)com>
wrote:
>
> On 2014-07-16 20:45:15 -0300, Fabrízio de Royes Mello wrote:
> > > The rewrite will read in the 'old' contents - but because it's done
> > > after the pg_class.relpersistence is changed they'll all not be marked
> > > as BM_PERMANENT in memory. Then the ALTER TABLE is rolled back,
> > > including the relpersistence setting. Which will unfortunately leave
> > > pages with the wrong persistency setting in memory, right?
> > >
> >
> > That means should I "FlushRelationBuffers(rel)" before change the
> > relpersistence?
>
> Did my explanation clarify the problem + possible solution sufficiently?
>

Yes, your explanation was enough. I didn't had time to working on it yet.
But I hope working on it today or tomorrow at least.

Regards,

--
Fabrízio de Royes Mello
Consultoria/Coaching PostgreSQL
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