Re: A few user-level questions on Streaming Replication and pg_upgrade

Robert Haas wrote:
> On Wed, Jul 20, 2011 at 2:53 PM, Bruce Momjian <bruce@momjian.us> wrote:
> >> I am assuming that's a "yes" to both the directions: older -> newer , and
> >> newer -> older minor releases.
> >
> > Yes, I believe both directions would work unless we mentioned it the
> > release notes, in which cases it might not work, or might work older to
> > newer but newer to older.
> 
> I don't see how this would get broken in a minor release.  We'd have
> to change the WAL format or the tuple format, which is definitely not
> minor release material.

If there was a bug in the xlog stream content we might not be able to
fix it without breaking compatibility.  Rare, but possible.

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +