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From Kishan Kavala <Kishan.Kav...@citrix.com>
Subject RE: [PROPOSAL] drop old upgrade code
Date Tue, 21 Jul 2015 15:54:58 GMT

-1 on dropping old upgrade code.

I prefer skipping old upgrade paths during coverity scan instead of removing the code altogether.
Even with multi-step upgrade, user will be forced to register system templates multiple times
(once for every step).  
Agree with John regarding the need to establish a standard upgrade policy.

-----Original Message-----
From: John Burwell [mailto:john.burwell@shapeblue.com] 
Sent: 20 July 2015 09:41 PM
To: dev@cloudstack.apache.org
Subject: Re: [PROPOSAL] drop old upgrade code

Daan,

While I see the desire to remove outstanding scan issues, doing it at the expense of a feature
required by users is not acceptable to me.  My first question is how many users are still
running pre-4.x versions?  In its current state, the commit message lacks an explanation of
the reasoning for the change, and there is no documentation about the change.  Until these
basic bits of documentation are addressed, and we have a good feel for the user impact, I
am -1 on this change.

With this change, I think we should also establish a standard upgrade support policy (e.g.
current minor release - x revisions).  If a user falls far enough behind, they would be require
to execute a multi-step upgrade in order to upgrade to latest.  Whatever we decide, it should
be clearly documented, and discussed on dev@ and user@.

I am happy to pose these questions on user@ to get a feel for the potential impact of this
change and input on the desired upgrade policy.

Thanks,
-John

---
John Burwell (@john_burwell)
VP of Software Engineering, ShapeBlue
(571) 403-2411 | +44 20 3603 0542
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> On Jul 20, 2015, at 10:27 AM, Daan Hoogland <daan.hoogland@gmail.com> wrote:
>
> in anticipation of loads of +1's I made a new PR (at [2])
>
> On Mon, Jul 20, 2015 at 2:29 PM, Wido den Hollander <wido@widodh.nl> wrote:
>>
>>
>> On 20-07-15 13:48, Daan Hoogland wrote:
>>> LS,
>>>
>>> In coverity the only remaining high impact issues are concerned with 
>>> upgrade code. Some of it is in 4.3 and 4.5 code but most in pre-4 
>>> upgrades.
>>>
>>> I addressed the file Upgrade218to22.java in a PR [1] and I move that 
>>> we don't pull it but instead drop the file altogether together with 
>>> all upgrade code dating prior to 4.0.0. anybody on older versions 
>>> can still upgrade to any version between 4.0 and 4.5 and move on 
>>> from there.
>>>
>>> My objective is to have no high impact issues remaining so we 
>>> clearly see when we are digressing beit by hand or in  an automated way.
>>>
>>> +1?
>>>
>>
>> +1 I don't see a reason to keep supporting these ancient upgrade paths.
>>
>> Wido
>>
>>> [1] https://github.com/apache/cloudstack/pull/603
>
> [2] https://github.com/apache/cloudstack/pull/608
>
>
> --
> Daan

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