Re: Can we do something to help stop users mistakenly using force_parallel_mode?

On Wed, 15 Feb 2023 at 11:27, Andrew Dunstan <andrew@dunslane.net> wrote:
> It's just occurred to me that this could break the buildfarm fairly comprehensively. I just took a count and we have
74members using force_parallel_mode. Maybe we need to keep force_parallel_mode as an alternative spelling for
debug_parallel_queryuntil we can get them all switched over. I know it's more trouble ... 

Yeah, I mentioned in [1] about that and took measures there to keep
the old name in place.  In the latest patch, there's an entry in
map_old_guc_names[] to allow the old name to work. I think the
buildfarm will still work ok because of that.

What I'm not so sure about is how to go about getting all owners to
change the config for versions >= PG16. Is that a question of emailing
each owner individually to ask them if they can make the change? Or
should we just forever keep the map_old_guc_names[] entry for this?

David

[1] https://postgr.es/m/CAApHDvrT8eq0UwgetGtQE7XLC8HFN8weqembtvYxMVgtWbcnjQ@mail.gmail.com