Bruce Momjian escribió:

> > I have no problem removing the parameter if required to. In that case,
> > I would like to leave the parameter in until mid beta, to allow
> > greater certainty.

Uhm.  If we remove a GUC during beta we don't need to force an initdb.
At worst we will need to keep a no-op GUC variable that is removed in
the next devel cycle.  That said, if we're going to have a GUC that's
going to disappear later, I think it's better to wait for 2 releases as
proposed, not remove mid-beta.

> > In any case, I would wish to retain as a minimum an extern bool
> > variable allowing it to be turned off by C function if desired.

I think this amounts to having an undocumented GUC that is hard to
change.  I prefer the GUC, myself.

> Anything changed to postgresql.conf during beta is going to require an
> initdb.
> Also, lots of backward-compatibility infrastructure, as you are
> suggesting above, add complexity to the system.
> I am basically against a GUC on this.  We have far larger problems with
> 9.3 than backward compatibility, and limited resources.

If we have a clear plan on removing the parameter, it's easy enough to
follow through.  I don't think lack of resources is a good argument,
because at that point there will be little to discuss and it's an easy
change to make.  And I think the plan is clear: if no bug is found the
parameter is removed.  If a bug is found, it is fixed and the parameter
is removed anyway.

Honestly, I would prefer that we push a patch that has been thoroughly
reviewed and in which we have more confidence, so that we can push
without a GUC.  This means mark in CF as needs-review, then some other
developer reviews it and marks it as ready-for-committer.

Álvaro Herrera      
PostgreSQL Development, 24x7 Support, Training & Services

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