Re: Removing pg_migrator limitations

Robert Haas <robertmhaas@gmail.com> writes:
> I agree that pulling pg_migrator into contrib seems pretty sensible.
> What I want to make sure we're on the same page about is which
> versions the 8.5 pg_migrator will allow you to upgrade from and to.  I
> think we should at least support 8.3 -> 8.5 and 8.4 -> 8.5.  If you're
> saying we don't need to support 8.3 -> 8.4 any more once 8.5 comes
> out, I'm probably OK with that, but perhaps we should try to get a few
> more opinions before setting that policy in stone.

If we can do that reasonably (which might well be the case), I'd be for
it.  What I'm objecting to is what I take to be Bruce's plan of
supporting 8.3 -> 8.4 and 8.4 -> 8.5 with the same pg_migrator sources.
The stuff we're talking about doing in this thread is going to cause
those two cases to diverge rather drastically.  8.3 -> 8.5 and 8.4 ->
8.5 may be close enough together to be reasonable to support in one
set of source code.
        regards, tom lane