| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> | 
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> | 
| Cc: | jd(at)commandprompt(dot)com, pgsql-hackers(at)postgresql(dot)org | 
| Subject: | Re: Prepping to break every past release... | 
| Date: | 2009-03-11 06:33:25 | 
| Message-ID: | 49B75B35.2050404@gmx.net | 
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| Lists: | pgsql-hackers | 
Simon Riggs wrote:
> The most consistent negative feedback I receive about Postgres is that
> we make minor changes from release to release that make it extremely
> difficult to upgrade without re-testing the applications. So we write
> great software, then make it difficult for people to upgrade to it.
Then I would maintain that part of that makes the software great is that 
we have the ability to make incompatible changes once in a while, 
avoiding the accumulation of cruft.  We do maintain old releases for 5 
years as compensation.
I did propose a deprecation policy that would address your concern to 
some degree by issuing warnings in release N-1, so the testing after 
upgrade can be taken care of for the most part by hunting down these 
warnings while running the previous release.  That didn't receive 
universal support, but I think we should still look for a compromise in 
that area.
The argument against was that this would slow down PostgreSQL 
development too much.  And note that the one-year major release cycle of 
PostgreSQL is already pretty much the shortest one of any software of 
this complexity.
So everyone has different expectations, it seems.
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