From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Andres Freund <andres(at)anarazel(dot)de> |
Cc: | Pavel Raiskup <praiskup(at)redhat(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, PostgreSQL Hacker <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: obsoleting plpython2u and defaulting plpythonu to plpython3u |
Date: | 2018-04-27 17:34:58 |
Message-ID: | 25359.1524850498@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> Another alternative would be to have a 'plpython' extension that depends
> on plpython2. That'd require users to specify CASCADE when creating it,
> but that actually seems like it could be a useful hint... I think it's
> probably not worth going that route though, because reassigning objects
> from one extension to another is more work than reasonable...
Yeah, there's a separate set of questions about what happens during
pg_upgrade of a database containing the existing plpythonu extension.
You could imagine hacking the dump/reload case by defining plpythonu
as an empty extension with a dependency on plpython2u (or, maybe
someday in future, a dependency on plpython3u). But that won't do
the trick for binary upgrades; we might need special-case code in
pg_dump/pg_upgrade to fix that.
regards, tom lane
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