On 2 November 2015 at 14:19, Michael Paquier <michael.paquier@gmail.com> wrote:
> pg_upgradecluster has some logic to switch a parameter value (see
> strrepl)
That's part of pg_wrapper, not core, though.
I'd quite like to see pg_wrapper become part of the PGDG RPMs, but
right now AFAIK it's a Debian-derived-only thing.
> and pg_upgrade does not handle parameter name switches by
> itself
Exactly.
> so the price to pay would be more maintenance annoyance for
> existing upgrade scripts, which happens at more or less each major
> release (checkpoint_segments removed in 9.5, unix_socket_directory
> renamed in 9.3, etc.).
Fair point. I'm not a great fan of how those changes affect users, but
I've also seen what too much backward compatibility can do to a
project. (Ref: Java, the Win32 APIs).
If users miss it then it won't explode anything in a way that's
dangerous or harmful, so I won't complain overly. I just wanted to
raise it as a possible concern.
-- Craig Ringer http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services
