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Re: ISN was: Core Extensions relocation

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Peter Geoghegan <peter(at)2ndquadrant(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Josh Berkus <josh(at)agliodbs(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: ISN was: Core Extensions relocation
Date: 2011-11-21 17:25:54
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Lists: pgsql-hackers
Peter Geoghegan wrote:
> On 17 November 2011 03:54, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> >?It's not reasonable to suppose
> > that nobody is using it today.
> I didn't suppose that no one is using it, but that those that are
> using it are unaware of the risks with prefix validation, and that
> there will be a rude awakening for them.
> > Ergo, we can't just summarily break
> > backwards compatibility on the grounds that we don't like the design.
> > Heck, we don't even have a field bug report that the design limitation
> > is causing any real problems for real users ... so IMO, the claims that
> > this is dangerously broken are a bit overblown.
> I think that's it's rather unlikely that removing hyphenation and
> prefix validation would adversely affect anyone, provided that it was
> well documented and wasn't applied to stable branches. If it were up
> to me, I might remove validation from stable branches but keep
> hyphenation, while removing both for 9.2 . After all, hyphenation will
> break anyway, so they're worse off continuing to rely on hyphenation
> when it cannot actually be relied on.

Clarification:  Our policy for patching back-branches is that the bug
has to affect many users, be serious, and the fix has to be easily

For a user-visible change (which this would be), the criteria is even
more strict. 

I don't see any of this reaching the level that it needs to be
backpatched, so I think we have to accept that this will be 9.2-only

  Bruce Momjian  <bruce(at)momjian(dot)us>

  + It's impossible for everything to be true. +

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