On Mon, Sep 15, 2014 at 12:45 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> No. And we don't know how to change the default opclass without
> breaking things, either.
Is there a page on the Wiki along the lines of "things that we would
like to change if ever there is a substantial change in on-disk format
that will break pg_upgrade"? ISTM that we should be intelligently
saving those some place, just as Redhat presumably save up
ABI-breakage over many years for the next major release of RHEL.
Alexander's complaint is a good example of such a change, IMV. Isn't
it more or less expected that the day will come when we'll make a
clean break?
--
Peter Geoghegan