Re: logical decoding : exceeded maxAllocatedDescs for .spill files

Hi,

On 2019-09-12 09:57:55 -0300, Alvaro Herrera wrote:
> On 2019-Sep-12, Tomas Vondra wrote:
> 
> > On Wed, Sep 11, 2019 at 09:51:40AM -0300, Alvaro Herrera from 2ndQuadrant wrote:
> > > On 2019-Sep-11, Amit Khandekar wrote:
> 
> > > I think doing this all the time would make restore very slow -- there's a
> > > reason we keep the files open, after all.
> > 
> > How much slower? It certainly will have a hit, but maybe it's negligible
> > compared to all the other stuff happening in this code?

I'd expect it to be significant.


> > As a sidenote - in the other thread about streaming, one of the patches
> > does change how we log subxact assignments. In the end, this allows using
> > just a single file for the top-level transaction, instead of having one
> > file per subxact. That would also solve this.

Uhm, how is rollback to savepoint going to be handled in that case? I
don't think it's great to just retain space for all rolled back
subtransactions.

Greetings,

Andres Freund