| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Paul Ramsey <pramsey(at)cleverelephant(dot)ca> |
| Cc: | Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Extension upgrade and GUCs |
| Date: | 2015-08-20 09:17:31 |
| Message-ID: | CANP8+jL=vAgmeq_dQ3UOC90rtZu0M=KS_9tG4cVS+qWCVhf5mA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 18 August 2015 at 21:03, Paul Ramsey <pramsey(at)cleverelephant(dot)ca> wrote:
> So I need a way to either (a) notice when I already have a (old) copy
> of the library loaded and avoid trying to setup the GUC in that case
> or (b) set-up the GUC in a somewhat less brittle way than
> DefineCustomStringVariable() allows, something that can overwrite
> things instead of just erroring out.
>
Are you trying to preserve the in-memory state across upgrade as well? It
sounds unlikely we can support that directly in the general case.
Sounds like we need RedefineCustomStringVariable()
--
Simon Riggs http://www.2ndQuadrant.com/
<http://www.2ndquadrant.com/>
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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