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From Rajani Karuturi <raj...@apache.org>
Subject Re: Cherry-picking fix that may change 4.3.1 schema
Date Wed, 03 Sep 2014 03:45:59 GMT
On Tue, Sep 2, 2014 at 9:18 PM, Will Stevens <wstevens@cloudops.com> wrote:

>
> @Rajani
> I am not entirely sure which technology is being used for the db upgrade
> paths, but I think it is probably something like liquibase already.  I
> would have to check on the technology, but this is already in place.  The
> issue is more about maintaining an upgradeable path for each version that
> is released.  This is a bit complicated by the fact that we currently have
> 4.3, 4.4 and 4.5 version all having changes made to them at the same
> time...
>
>
we do not use any external library. It is home grown and has the
limitations like not handling commit to commit migration. it only does
version to version which is why we see lot of db issues on master as
well(current development branch)



~Rajani



>
> *Will STEVENS*
> Lead Developer
>
> *CloudOps* *| *Cloud Solutions Experts
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>
>
> On Tue, Sep 2, 2014 at 11:28 AM, Rohit Yadav <rohit.yadav@shapeblue.com>
> wrote:
>
> >
> > On 02-Sep-2014, at 5:07 pm, Francois Gaudreault <
> fgaudreault@cloudops.com>
> > wrote:
> > > I see. Well, I think we were impacted by that too, and we made the
> > decision to move on 4.4.1-snap (even if it's technically less stable?)
> and
> > then upgrade to 4.4.1 GA (next week?)
> > >
> > > I personally don't think pulling back DB changes in lower releases is a
> > good idea :S
> > >
> > > But that's only my opinion :)
> >
> > I raised a concrete issue regarding 4.3.1/4.4.1 release and I would like
> > to stick to that only. I understand there are too many numbers, versions
> > and branches to follow, so please if you can try to understand the issue;
> >
> > This issue — https://issues.apache.org/jira/browse/CLOUDSTACK-6756
> > requires that there are some extra columns in the database to do book
> > keeping when delete ips so you don’t actually delete db/table rows.
> >
> > The issue above is fixed in an upgrade path from 4.3.0 to 4.4.0:
> >
> >
> https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;a=blobdiff;f=setup/db/db/schema-430to440.sql;h=226260804523c79e3ce3cfa3c407b5ac698d749c;hp=3b525c41a1befd94c5ffc324c357b566606a97d0;hb=ce6a53e;hpb=d0f806b3a486c58b033083fc57f39dd686e31750
> >
> > But, we already have 4.4.0 release and db upgrade paths are always in the
> > next release versions.
> >
> > So, there is no upgrade path from 4.3.1 to 4.4.0; as 4.3.1 version does
> > not care about 4.4.0 schema changes. There is only an upgrade path from
> > 4.3.0 to 4.3.1. So, the limitation is that people won’t be able to
> upgrade
> > from 4.3.1 to 4.4.0, because 4.4.0 is already released.
> >
> > If we release 4.4.1 before 4.3.1, we’ll have the same issue. So, we can
> > put the fix from the JIRA issue on 4.3 branch so the issue is fixed for
> > 4.3.1. The fix will be in the 4.3.0 to 4.3.1 upgrade path. And, if we
> > release 4.4.1 after 4.3.1, we can fix the upgrade path from 4.3.1 to
> 4.4.1
> > on 4.4 branch such that
> >
> > The abstract issue is — we’ll have such issue in future, how do we fix
> it.
> > I suggested — we make a separate tool that does (rolling) upgrades.
> >
> > Regards,
> > Rohit Yadav
> > Software Architect, ShapeBlue
> > M. +41 779015219 | rohit.yadav@shapeblue.com
> > Blog: bhaisaab.org | Twitter: @_bhaisaab
> >
> >
> >
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