| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Chapman Flack <chap(at)anastigmatix(dot)net> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: If an extension library is loaded during pg_upgrade, can it tell? |
| Date: | 2017-04-04 02:08:09 |
| Message-ID: | 20170404020809.GB3951@momjian.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Mon, Apr 3, 2017 at 09:53:34PM -0400, Chapman Flack wrote:
> Hi,
>
> Is there any distinctive state that could be checked by extension code
> to determine that it has been loaded incidentally during the operation
> of pg_upgrade rather than under normal conditions?
>
> PL/Java ordinarily checks what version of its schema is around, but
> that may be premature while pg_upgrade is doing its thing and the schema
> might not be all there yet.
You can check the backend global variable IsBinaryUpgrade to check if
binary upgrade is being performed. Does that help you?
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ As you are, so once was I. As I am, so you will be. +
+ Ancient Roman grave inscription +
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