Re: pg_restore fails to restore sequences

Tom Lane wrote:
> Thom Brown <thom(at)linux(dot)com> writes:
> > On 28 September 2015 at 22:21, Spencer Gardner <spencergardner(at)gmail(dot)com> wrote:
> >> Actually, yes. That's the reason for backing up. We had been playing with
> >> BDR on a custom build but have reverted to the stock Ubuntu build for the
> >> time being. So it sounds like the issue is caused by dumping from our custom
> >> BDR build. It's not really a big issue - I've already rebuilt the affected
> >> sequences.
>
> > Have you tried dumping the database using the stock pg_dump
> > executable? The BDR branch isn't compatible with regular PostgreSQL,
> > at least not yet.
>
> Seems like it would be a good idea if BDR's pg_dump were to suppress
> "USING local" clauses, and only output USING if it's not default, so as
> not to create gratuitous incompatibilities like this one.

Looking at the BDR commit history, it has been doing that since May.

commit 1592812131d84de56ba258c333f936e5e19647e2
Author: Craig Ringer <craig(at)2ndquadrant(dot)com>
AuthorDate: Tue May 26 10:18:10 2015 +0800
CommitDate: Tue May 26 10:22:56 2015 +0800

Only dump non-default sequence access methods

To prevent issues with UDR and with restoring BDR dumps to non-BDR
databases, don't emit a USING clause unless the pg_seqam catalog is
present and the dumped sequence uses a non-default sequence access
method.

The dump should be restored with default_seqam = 'local' to ensure
that local sequences aren't transformed into 'bdr' sequences during
restore.

--
Álvaro Herrera http://www.2ndQuadrant.com/
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