Re: pg_dump versus ancient server versions

On 12/9/21 12:50, Tom Lane wrote:
>
> In short then, there is a really large gap between 9.1 and 9.2 in terms
> of how hard they are to build on current toolchains. It's kind of
> fortunate that Peter proposed 9.2 rather than some earlier cutoff.
> In any case, I've completely lost interest in trying to move the
> keep-it-buildable cutoff to any earlier than 9.2; it doesn't look
> like the effort-to-benefit ratio would be attractive at all.
>
>

9.2 is how far back crake goes in testing pg_ugrade from old versions,
so that could well be a convenient stopping point. For older versions
there is still the possibility of building on older toolchains and
running on modern ones. Yes it's more cumbersome, but it does mean we
can test an awful long way back. I don't remember the last time I saw a
really old version in the wild, but I'm sure there are some out there
sitting in a cupboard humming along.

This might also be a good time to revive work on making the TAP test
framework backwards compatible via subclassing.

cheers

andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com