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From: Rohit Yadav <rohit.yadav@shapeblue.com>
To: "dev@cloudstack.apache.org" <dev@cloudstack.apache.org>
Subject: Re: Cherry-picking fix that may change 4.3.1 schema
Thread-Topic: Cherry-picking fix that may change 4.3.1 schema
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Date: Tue, 2 Sep 2014 14:48:33 +0000
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On 02-Sep-2014, at 4:38 pm, David Nalley <david@gnsa.us> wrote:
> I agree - how will users upgrade from 4.3.1 to 4.4.x or later - schema
> changes aren't necessarily going to screw up the upgrade process, but
> certainly have a high likelihood of doing so. What happens when
> 4.3.0-to-4.4.0.sql runs? The table already exists - and upgrade will
> puke. 4.4.0 is already released; so not like you can roll that change
> back.

Since 4.4.0 is already released, people who will install 4.3.1 won=92t be a=
ble to upgrade to 4.4.0 as the 4.4.0 artifacts won=92t have an upgrade path=
 from 4.3.1 to 4.4.0; but this can be only fixed (i.e. have an upgrade path=
) in 4.4.1.

For 4.3.1, we can still have the changes but 4.3.1 users would only be able=
 to upgrade to 4.4.1 or later releases and not 4.4.0 because there is no pa=
th from 4.3.1 to 4.4.0 in 4.4.0 release.

This is true for all ACS releases, only the latest releases know and have u=
pgrade paths. So, what I also proposed here was to refactor the whole upgra=
de logic as a tool and maintain it separately and this tool can perhaps has=
 its own release process that is faster than the ACS releases and this tool=
 knows about all the releases and has the necessary upgrade paths.

Regards,
Rohit Yadav
Software Architect, ShapeBlue
M. +41 779015219 | rohit.yadav@shapeblue.com
Blog: bhaisaab.org | Twitter: @_bhaisaab


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