Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2017-11-07 17:57:31 +0000, Simon Riggs wrote:
>> Remove secondary checkpoint
> FWIW, I don't think this should be applied without a pg_resetxlog
> feature allowing to manually use older checkpoints.
Uh, what? We have never before insisted on pg_resetxlog being able
to use WAL across a WAL format change, and there have been many of
those.
regards, tom lane