Re: 9.4 pg_dump use on 9.0 db

* Tom Lane (tgl(at)sss(dot)pgh(dot)pa(dot)us) wrote:
> Ray Stell <stellr(at)vt(dot)edu> writes:
> > Is it valid to dump a 9.0 db with a 9.4 pg_dump and make use of the
> > parallel feature? TIA.
>
> Yes, but be aware that 9.4 pg_dump will be generating output meant to
> be loaded into a 9.4 server. You might have to make some adjustments
> if you mean to reload it into 9.0.

Also be aware that you won't get a synchronized snapshot and therefore
the resulting dump might not be valid..

Looking at pg_dump, for my 2c anyway, it'd be nicer if we threw an error
on parallel dump request when the major version doesn't support
synchronized snapshots, unless the user explicitly passed
--no-synchronized-snapshots, indicating that they don't care.

Thanks,

Stephen