On 03/20/2014 11:05 AM, Solly Ross wrote:
I concur. I suspect people/organizations who are doing CD *probably* won't mind
such a change as much as the people who use the versioned releases will mind
backwards-incompatibility. Correct me if I'm wrong, but doing CD requires a
certain willingness to roll with the punches, so to speak, whereas people using
versioned releases are less likely to be as flexible.
Best Regards,
Solly Ross
It looks like there was no existing unit test for what horizon ended up
doing, where a red-flagging change to the test would have been needed.
There is obviously also no tempest test. But I hope that folks doing CD
would not roll with this sort of punch if they find it, but push back
immediately to revert the change unless it had gone through whatever api
change review process we come up with. I presume that it simply was not
noticed since it is perhaps a bit of an obscure api point. Since
OpenStack currently advertises 6 month cycle releases and stable apis,
it would be best to revert it IMO.
-David
----- Original Message -----
From: "Thierry Carrez" <[email protected]>
To: [email protected]
Sent: Thursday, March 20, 2014 6:51:26 AM
Subject: Re: [openstack-dev] [nova] Backwards incompatible API changes
Christopher Yeoh wrote:
The patch was merged in October (just after Icehouse opened) and so has
been used in clouds that do CD for quite a while. After some discussion
on IRC I think we'll end up having to leave this backwards incompatible
change in there - given there are most likely users who now rely on
both sets of behaviour there is no good way to get out of this
situation. I've added a note to the Icehouse release notes.
I still think reverting before release is an option we should consider.
My point is, yes we broke it back in October for people doing CD (and
they might by now have gotten used to it), if we let this to release
we'll then break it for everyone else.
We put a high emphasis into guaranteeing backward compatibility between
releases. I think there would be more damage done if we let this sail to
release, compared to the damage of reverting CD followers to pre-October
behavior...
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