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FYI: so far (according to poll [1]) we have

* 11 votes for keeping 9.2
* 4 votes for restoring 9.3

[1] https://docs.google.com/spreadsheets/d/1RNcEVFsg7GdHIXlJl-6LCELhlwQ_zmTbd40Bk_jH1m4/edit?usp=sharing

On Tue, Dec 15, 2015 at 8:34 PM, Vladimir Kuklin <vkuklin at mirantis.com> wrote:
> Folks
>
> Let me add my 2c here.
>
> I am for using Postgres 9.3. Here is an additional argument to the ones
> provided by Artem, Aleksandra and others.
>
> Fuel is being sometimes highly customized by our users for their specific
> needs. It has been Postgres 9.3 for a while and they might have as well
> gotten used to it and assumed by default that this would not change. So some
> of their respective features they are developing for their own sake may
> depend on Postgres 9.3 and we will never be able to tell the fraction of
> such use cases. Moreover, downgrading DBMS version of Fuel should be
> inevitably considered as a 'deprecation' of some features our software suite
> is providing to our users. This actually means that we MUST provide our
> users with a warning and deprecation period to allow them to adjust to these
> changes. Obviously, accidental change of Postgres version does not follow
> such a policy in any way. So I see no other ways except for getting back to
> Postgres 9.3.
>
>
> On Tue, Dec 15, 2015 at 7:39 PM, Igor Kalnitsky <ikalnitsky at mirantis.com>
> wrote:
>>
>> Hey Mike,
>>
>> Thanks for your input.
>>
>> > actually not.  if you replace your ARRAY columns with JSON entirely,
>>
>> It still needs to fix the code, i.e. change ARRAY-specific queries
>> with JSON ones around the code. ;)
>>
>> > there's already a mostly finished PR for SQLAlchemy support in the
>> > queue.
>>
>> Does it mean SQLAlchemy will have one unified interface to make JSON
>> queries? So we can use different backends if necessary?
>>
>> Thanks,
>> - Igor
>>
>> On Tue, Dec 15, 2015 at 5:06 PM, Mike Bayer <mbayer at redhat.com> wrote:
>> >
>> >
>> > On 12/15/2015 07:20 AM, Igor Kalnitsky wrote:
>> >> Hey Julien,
>> >>
>> >>>
>> >>> https://blueprints.launchpad.net/fuel/+spec/openstack-ha-fuel-postgresql
>> >>
>> >> I believe this blueprint is about DB for OpenStack cloud (we use
>> >> Galera now), while here we're talking about DB backend for Fuel
>> >> itself. Fuel has a separate node (so called Fuel Master) and we use
>> >> PostgreSQL now.
>> >>
>> >>> does that mean Fuel is only going to be able to run with PostgreSQL?
>> >>
>> >> Unfortunately we already tied up to PostgreSQL. For instance, we use
>> >> PostgreSQL's ARRAY column type. Introducing JSON column is one more
>> >> way to tighten knots harder.
>> >
>> > actually not.  if you replace your ARRAY columns with JSON entirely,
>> > MySQL has JSON as well now:
>> > https://dev.mysql.com/doc/refman/5.7/en/json.html
>> >
>> > there's already a mostly finished PR for SQLAlchemy support in the
>> > queue.
>> >
>> >
>> >
>> >>
>> >> - Igor
>> >>
>> >> On Tue, Dec 15, 2015 at 12:28 PM, Julien Danjou <julien at danjou.info>
>> >> wrote:
>> >>> On Mon, Dec 14 2015, Igor Kalnitsky wrote:
>> >>>
>> >>>> The things I want to notice are:
>> >>>>
>> >>>> * Currently we aren't tied up to PostgreSQL 9.3.
>> >>>> * There's a patch [2] that ties Fuel up to PostgreSQL 9.3+ by using a
>> >>>> set of JSON operations.
>> >>>
>> >>> I'm curious and have just a small side question: does that mean Fuel
>> >>> is
>> >>> only going to be able to run with PostgreSQL?
>> >>>
>> >>> I also see
>> >>>
>> >>> https://blueprints.launchpad.net/fuel/+spec/openstack-ha-fuel-postgresql,
>> >>> maybe it's related?
>> >>>
>> >>> Thanks!
>> >>>
>> >>> --
>> >>> Julien Danjou
>> >>> // Free Software hacker
>> >>> // https://julien.danjou.info
>> >>
>> >>
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>> >
>> >
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>
>
>
> --
> Yours Faithfully,
> Vladimir Kuklin,
> Fuel Library Tech Lead,
> Mirantis, Inc.
> +7 (495) 640-49-04
> +7 (926) 702-39-68
> Skype kuklinvv
> 35bk3, Vorontsovskaya Str.
> Moscow, Russia,
> www.mirantis.com
> www.mirantis.ru
> vkuklin at mirantis.com
>
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