Re: DISCARD ALL (Again)

On Thu, Apr 17, 2014 at 6:51 PM, Alvaro Herrera <alvherre@2ndquadrant.com> wrote:
>
> It does sounds a legitimate feature request to me.  I don't remember if
> we honored the request to add resetting of cached sequences, though; if
> we didn't, this one is probably going to be tough too.
>

+1


> Another point is that to implement this I think there will need to be
> another per-PL entry point to discard session data; are we okay with
> that?  Since this probably means a new column in pg_language, we
> couldn't even consider the idea of back-patching.  Unless we add a hook,
> which is registered in the PL's _PG_init()?
>

This week I had some similar trouble, but using "dblink" and "pgbouncer".
As expected "DISCARD ALL" don't clear the extension resources.

I was thinking if is possible to every extension register his own "discard" procedure and then the "DISCARD ALL" can execute all registered extension cleanup procedures. Makes sense?

> Are we going to backpatch a doc change that says "releases all temporary
> resources, except for plptyhon's and plperl's GD"?  Surely not ...
>

Maybe this doc can be like that:

"releases all temporary resources, except for extensions"

Grettings,

--
Fabrízio de Royes Mello
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