On Thu, Feb 11, 2016 at 07:18:46PM -0500, Bruce Momjian wrote:
> No, that is not an improvement --- see my previous comment:
> > We could get more sophisticated by checking the catalog version number
> > where the format was changed, but that doesn't seem worth it, and is
> > overly complex because we get the catalog version number from
> > pg_controldata, so you would be adding a dependency in ordering of the
> > pg_controldata entries.
> By testing for '906', you prevent users from using pg_upgrade to go from
> one catalog version of 9.6 to a later one.  Few people may want to do
> it, but it should work.

C comment added explaining why we do this.

  Bruce Momjian  <br...@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I. As I am, so you will be. +
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