On 31 Oct 2018, at 10:28, Vincent Massol <vincent(a)massol.net> wrote: You mean the versions from apt-get for ex (when using the default repos)? Indeed the idea could to follow one of them. Any suggestion for which one to follow and where the info is?

Thanks -Vinent > > Simon > >> So WDYT about the 3 questions? >> Thanks >> -Vincent > > -- > Simon Urli > Software Engineer at XWiki SAS > simon.urli(a)xwiki.com > More about us at http://www.xwiki.com

On Wed, Oct 31, 2018 at 10:28 AM Vincent Massol <vincent(a)massol.net> wrote: Since we provide Debian package one good reference to know which version of MySQL to support IMO would be https://packages.debian.org/search?keywords=mysql-server&searchon=names… So it would be good to support 5.5 and 5.7

Here is the one for postgresql (since we also have a pgsql based Debian package) https://packages.debian.org/search?keywords=postgresql&searchon=names&a…

So 9.4, 9.6 and 11

On 31 Oct 2018, at 14:43, Ecaterina Moraru (Valica) <valicac(a)gmail.com> wrote: IMO we should just write we support: * HyperSQL 2.x Latest * MySQL 5.x Latest * PostgreSQL 9.x Latest * Oracle 11.x Latest not sure what help would do to have the explicit 2.4.1, 5.7.24, 9.6.10, 11.2.0.4.0 versions.

Also I'm sure we won't keep up with the versions, so they won't mean latest. When we do the tests we should always fix and test on the latest one. And this 'latest' behavior is consistent with what we do for Browsers, with the exception that we are a bit more descriptive by giving the DB cycle.

Thanks, Caty On Wed, Oct 31, 2018 at 12:11 PM Simon Urli <simon.urli(a)xwiki.com> wrote: > > > On 31/10/2018 10:52, Thomas Mortagne wrote: >> On Wed, Oct 31, 2018 at 10:28 AM Vincent Massol <vincent(a)massol.net> > wrote: >>> >>> >>> >>>> On 31 Oct 2018, at 10:15, Simon Urli <simon.urli(a)xwiki.com> wrote: >>>> >>>> Hi, >>>> >>>> On 31/10/2018 09:06, Vincent Massol wrote: >>>>> Hi devs, >>>>> We currently have > https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy >>>>> However, it doesn’t say explicitly which versions we officially > support: >>>>> * For HSQLDB it says 2.3.3 which is wrong since the latest version is > 2.4.1 >>>>> * For MySQL it says 5.x but doesn’t specify which specific version(s) >>>>> * Same for other DBs >>>>> We cannot really support every versions since supporting means > testing too. >>>>> So what I propose: >>>>> Question 1: definition >>>>> * We say we support the latest stable version of the databases for a > given version cycle >>>>> ** For MySQL, it’s the latest of the 5.x cycle, which is 5.7.24 as of > today (see https://hub.docker.com/_/mysql/) >>>>> ** For PostgreSQL, it’s the latest of the 9.x cycle, which is 9.6.10 > as of today (see https://hub.docker.com/_/postgres/) >>>>> ** For Oracle, it’s the latest of the 11.x cycle, which is 11.2.0.4.0 > as of today (see > https://www.oracle.com/technetwork/database/enterprise-edition/downloads/in… > ) >>>> >>>> +1 >>>> >>>>> Question 2: review what we support >>>>> * For MySQL I think we could also start supporting MySQL 8.x (ie the > latest version of that cycle). We have an issue open for it currently: > https://jira.xwiki.org/browse/XWIKI-15215 >>>>> * For PostgreSQL we could also start supporting versions 11.x (ie the > latest version of that cycle) >>>>> * For Oracle, we could also start supporting versions 12.x (ie the > latest version of that cycle) >>>> >>>> +0 I don't really know how much effort it involves to ensure the > support of the latest version of each database and to fix the bugs > accordingly. >>>> >>>>> Question 3: decide if we drop some support >>>>> * Is there any cycle that we should support for? Right now I think > that MySQL 5.x is still heavily used, same for postgreSQL 9.x I guess. > Don’t know for Oracle. >>>>> * Any idea? >>>> >>>> What about the cycles that are bundled in major LTS distributions? >>> >>> You mean the versions from apt-get for ex (when using the default > repos)? >>> >>> Indeed the idea could to follow one of them. Any suggestion for which > one to follow and where the info is? >> >> Since we provide Debian package one good reference to know which >> version of MySQL to support IMO would be >> >> > https://packages.debian.org/search?keywords=mysql-server&searchon=names… >> >> So it would be good to support 5.5 and 5.7 > > Maybe it worth it to also look on Ubuntu packages for the LTS, as they > don't follow the same cycle: > https://packages.ubuntu.com/search?keywords=mysql-server > > Apparently for now version are the same than for Debian. >> >> Here is the one for postgresql (since we also have a pgsql based Debian > package) >> >> > https://packages.debian.org/search?keywords=postgresql&searchon=names&a… > > > https://packages.ubuntu.com/search?suite=default&section=all&arch=a… > > So here I see 9.3, 9.5, 10.5 > >> >> So 9.4, 9.6 and 11 >> >>> >>> Thanks >>> -Vinent >>> >>>> >>>> Simon >>>> >>>>> So WDYT about the 3 questions? >>>>> Thanks >>>>> -Vincent >>>> >>>> -- >>>> Simon Urli >>>> Software Engineer at XWiki SAS >>>> simon.urli(a)xwiki.com >>>> More about us at http://www.xwiki.com >>> >> >> > > -- > Simon Urli > Software Engineer at XWiki SAS > simon.urli(a)xwiki.com > More about us at http://www.xwiki.com >

On Wed, Oct 31, 2018 at 3:53 PM Vincent Massol <vincent(a)massol.net> wrote: See https://trends.google.com/trends/explore?cat=13&date=today%205-y&q=… and https://www.statista.com/statistics/809750/worldwide-popularity-ranking-dat… According to those pages my questions are: * Why are we supporting "Hypersonic DB" ? - but hey, apparently it's in the jetty thing. k :) Here we should just say latest, without any version to it. This DB is anyway only recommended for the demo version. * Why don't we support Microsoft SQL Server? Another reference: https://db-engines.com/en/ranking * MongoDB also is in the top 5 for 2018 in multiple resources. Should / could we also support that? In the Relational Databases section, DB2 is listed, see https://db-engines.com/en/ranking/relational+dbms Anyway, I think it would be enough if we support the top 3 DB for the latest versions. This would mean just MySQL 8.x instead of MySQL 5.x. Could not find any relevant comparison for DB versions. Found a graph from 2015 in https://plumbr.io/blog/io/most-popular-relational-databases where MySQL 5.6 was most popular (long time ago), so not sure what we could use as a reference. On the other hand MySQL 8.0 launched 6 month ago. So indeed, we should support the latest 5.7.x (5.7.24) and also 8.0.x (8.0.13), see https://en.wikipedia.org/wiki/MySQL#Release_history Regarding PostgreSQL, IMO we should support (10.5 || 9.6.10) and 11.0, see https://en.wikipedia.org/wiki/PostgreSQL#Release_history Regarding Oracle Database, we should support 12.2.0.1 and 18.1.0, see https://en.wikipedia.org/wiki/Oracle_Database#Releases_and_versions Regarding Microsoft SQL Server it should be (in case we decide it) SQL Server 2017, see https://en.wikipedia.org/wiki/Microsoft_SQL_Server#Currently My rule was: latest/latest + the latest stable/previous version. Thanks, Caty > > WDYT about that? > > Thanks > -Vincent > > > > > > Thanks, > > Caty > > > > > > On Wed, Oct 31, 2018 at 12:11 PM Simon Urli <simon.urli(a)xwiki.com> > wrote: > > > >> > >> > >> On 31/10/2018 10:52, Thomas Mortagne wrote: > >>> On Wed, Oct 31, 2018 at 10:28 AM Vincent Massol <vincent(a)massol.net> > >> wrote: > >>>> > >>>> > >>>> > >>>>> On 31 Oct 2018, at 10:15, Simon Urli <simon.urli(a)xwiki.com> wrote: > >>>>> > >>>>> Hi, > >>>>> > >>>>> On 31/10/2018 09:06, Vincent Massol wrote: > >>>>>> Hi devs, > >>>>>> We currently have > >> https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy > >>>>>> However, it doesn’t say explicitly which versions we officially > >> support: > >>>>>> * For HSQLDB it says 2.3.3 which is wrong since the latest version > is > >> 2.4.1 > >>>>>> * For MySQL it says 5.x but doesn’t specify which specific > version(s) > >>>>>> * Same for other DBs > >>>>>> We cannot really support every versions since supporting means > >> testing too. > >>>>>> So what I propose: > >>>>>> Question 1: definition > >>>>>> * We say we support the latest stable version of the databases for > a > >> given version cycle > >>>>>> ** For MySQL, it’s the latest of the 5.x cycle, which is 5.7.24 as > of > >> today (see https://hub.docker.com/_/mysql/) > >>>>>> ** For PostgreSQL, it’s the latest of the 9.x cycle, which is > 9.6.10 > >> as of today (see https://hub.docker.com/_/postgres/) > >>>>>> ** For Oracle, it’s the latest of the 11.x cycle, which is > 11.2.0.4.0 > >> as of today (see > >> > https://www.oracle.com/technetwork/database/enterprise-edition/downloads/in… > >> ) > >>>>> > >>>>> +1 > >>>>> > >>>>>> Question 2: review what we support > >>>>>> * For MySQL I think we could also start supporting MySQL 8.x (ie > the > >> latest version of that cycle). We have an issue open for it currently: > >> https://jira.xwiki.org/browse/XWIKI-15215 > >>>>>> * For PostgreSQL we could also start supporting versions 11.x (ie > the > >> latest version of that cycle) > >>>>>> * For Oracle, we could also start supporting versions 12.x (ie the > >> latest version of that cycle) > >>>>> > >>>>> +0 I don't really know how much effort it involves to ensure the > >> support of the latest version of each database and to fix the bugs > >> accordingly. > >>>>> > >>>>>> Question 3: decide if we drop some support > >>>>>> * Is there any cycle that we should support for? Right now I think > >> that MySQL 5.x is still heavily used, same for postgreSQL 9.x I guess. > >> Don’t know for Oracle. > >>>>>> * Any idea? > >>>>> > >>>>> What about the cycles that are bundled in major LTS distributions? > >>>> > >>>> You mean the versions from apt-get for ex (when using the default > >> repos)? > >>>> > >>>> Indeed the idea could to follow one of them. Any suggestion for which > >> one to follow and where the info is? > >>> > >>> Since we provide Debian package one good reference to know which > >>> version of MySQL to support IMO would be > >>> > >>> > >> > https://packages.debian.org/search?keywords=mysql-server&searchon=names… > >>> > >>> So it would be good to support 5.5 and 5.7 > >> > >> Maybe it worth it to also look on Ubuntu packages for the LTS, as they > >> don't follow the same cycle: > >> https://packages.ubuntu.com/search?keywords=mysql-server > >> > >> Apparently for now version are the same than for Debian. > >>> > >>> Here is the one for postgresql (since we also have a pgsql based > Debian > >> package) > >>> > >>> > >> > https://packages.debian.org/search?keywords=postgresql&searchon=names&a… > >> > >> > >> > https://packages.ubuntu.com/search?suite=default&section=all&arch=a… > >> > >> So here I see 9.3, 9.5, 10.5 > >> > >>> > >>> So 9.4, 9.6 and 11 > >>> > >>>> > >>>> Thanks > >>>> -Vinent > >>>> > >>>>> > >>>>> Simon > >>>>> > >>>>>> So WDYT about the 3 questions? > >>>>>> Thanks > >>>>>> -Vincent > >>>>> > >>>>> -- > >>>>> Simon Urli > >>>>> Software Engineer at XWiki SAS > >>>>> simon.urli(a)xwiki.com > >>>>> More about us at http://www.xwiki.com > >>>> > >>> > >>> > >> > >> -- > >> Simon Urli > >> Software Engineer at XWiki SAS > >> simon.urli(a)xwiki.com > >> More about us at http://www.xwiki.com > >> > >

Hi Caty, Thanks but I think we should focus on the databases that our users use for XWiki. We have that info already with the active installs.

It’s already a lot of work :) My goal with this thread was not fully review the list of supported databses, just to make it more clear the versions of them we want to support. Thanks -Vincent wrote: https://www.eversql.com/most-popular-databases-in-2018-according-to-stackov… valicac(a)gmail.com> wrote: valicac(a)gmail.com> 9.6.10, cycle. https://trends.google.com/trends/explore?cat=13&date=today%205-y&q=… https://www.statista.com/statistics/809750/worldwide-popularity-ranking-dat… version Could 2015 use see wrote: https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy version for as https://www.oracle.com/technetwork/database/enterprise-edition/downloads/in… currently: the think guess. which https://packages.debian.org/search?keywords=mysql-server&searchon=names… they https://packages.debian.org/search?keywords=postgresql&searchon=names&a… https://packages.ubuntu.com/search?suite=default&section=all&arch=a…

On 31 Oct 2018, at 16:27, Vincent Massol <vincent(a)massol.net> wrote: Yes. However we can’t support all versions and people usually lag behind. So I don’t think we should support more than the latest one. Already hard to do. BTW we do have the versions, we just don’t display them. See http://activeinstalls.xwiki.org/#/dashboard I did a quick pie chart for mysql: https://www.evernote.com/l/AHe-MYCE-09Nuoyau9jFQf45OgtIZKmaqk0

Thanks -Vincent > > Thanks, > Caty > > >> >> It’s already a lot of work :) >> >> My goal with this thread was not fully review the list of supported >> databses, just to make it more clear the versions of them we want to >> support. >> >> Thanks >> -Vincent >> >>> On 31 Oct 2018, at 15:57, Ecaterina Moraru (Valica) &lt;valicac(a)gmail.com&gt; >> wrote: >>> >>> Another top >>> >> https://www.eversql.com/most-popular-databases-in-2018-according-to-stackov… >>> >>> On Wed, Oct 31, 2018 at 4:45 PM Ecaterina Moraru (Valica) < >> valicac(a)gmail.com&gt; >>> wrote: >>> >>>> >>>> >>>> On Wed, Oct 31, 2018 at 3:53 PM Vincent Massol &lt;vincent(a)massol.net&gt; >> wrote: >>>> >>>>> Hi Caty, >>>>> >>>>>> On 31 Oct 2018, at 14:43, Ecaterina Moraru (Valica) < >> valicac(a)gmail.com&gt; >>>>> wrote: >>>>>> >>>>>> IMO we should just write we support: >>>>>> * HyperSQL 2.x Latest >>>>>> * MySQL 5.x Latest >>>>>> * PostgreSQL 9.x Latest >>>>>> * Oracle 11.x Latest >>>>>> not sure what help would do to have the explicit 2.4.1, 5.7.24, >> 9.6.10, >>>>>> 11.2.0.4.0 versions. >>>>> >>>>> Yes, this is what I proposed. >>>>> >>>>>> >>>>>> Also I'm sure we won't keep up with the versions, so they won't mean >>>>>> latest. >>>>>> When we do the tests we should always fix and test on the latest one. >>>>>> And this 'latest' behavior is consistent with what we do for Browsers, >>>>> with >>>>>> the exception that we are a bit more descriptive by giving the DB >> cycle. >>>>> >>>>> Sure. Note that there’s more in this thread, for example: >>>>> >>>>> 1) What does latest mean? >>>>> 2) What about the other 2 questions I asked? >>>>> >>>> >>>> See >>>> >>>> >> https://trends.google.com/trends/explore?cat=13&date=today%205-y&q=… >>>> and >>>> >>>> >> https://www.statista.com/statistics/809750/worldwide-popularity-ranking-dat… >>>> >>>> According to those pages my questions are: >>>> * Why are we supporting "Hypersonic DB" ? - but hey, apparently it's in >>>> the jetty thing. k :) Here we should just say latest, without any >> version >>>> to it. This DB is anyway only recommended for the demo version. >>>> * Why don't we support Microsoft SQL Server? >>>> >>>> Another reference: >>>> https://db-engines.com/en/ranking >>>> >>>> * MongoDB also is in the top 5 for 2018 in multiple resources. Should / >>>> could we also support that? In the Relational Databases section, DB2 is >>>> listed, see https://db-engines.com/en/ranking/relational+dbms >>>> >>>> Anyway, I think it would be enough if we support the top 3 DB for the >>>> latest versions. This would mean just MySQL 8.x instead of MySQL 5.x. >> Could >>>> not find any relevant comparison for DB versions. Found a graph from >> 2015 >>>> in https://plumbr.io/blog/io/most-popular-relational-databases where >>>> MySQL 5.6 was most popular (long time ago), so not sure what we could >> use >>>> as a reference. On the other hand MySQL 8.0 launched 6 month ago. So >>>> indeed, we should support the latest 5.7.x (5.7.24) and also 8.0.x >>>> (8.0.13), see https://en.wikipedia.org/wiki/MySQL#Release_history >>>> >>>> Regarding PostgreSQL, IMO we should support (10.5 || 9.6.10) and 11.0, >> see >>>> https://en.wikipedia.org/wiki/PostgreSQL#Release_history >>>> >>>> Regarding Oracle Database, we should support 12.2.0.1 and 18.1.0, see >>>> https://en.wikipedia.org/wiki/Oracle_Database#Releases_and_versions >>>> >>>> Regarding Microsoft SQL Server it should be (in case we decide it) SQL >>>> Server 2017, see >>>> https://en.wikipedia.org/wiki/Microsoft_SQL_Server#Currently >>>> >>>> My rule was: latest/latest + the latest stable/previous version. >>>> >>>> Thanks, >>>> Caty >>>> >>>> >>>>> >>>>> WDYT about that? >>>>> >>>>> Thanks >>>>> -Vincent >>>>> >>>>> >>>>>> >>>>>> Thanks, >>>>>> Caty >>>>>> >>>>>> >>>>>> On Wed, Oct 31, 2018 at 12:11 PM Simon Urli &lt;simon.urli(a)xwiki.com&gt; >>>>> wrote: >>>>>> >>>>>>> >>>>>>> >>>>>>> On 31/10/2018 10:52, Thomas Mortagne wrote: >>>>>>>> On Wed, Oct 31, 2018 at 10:28 AM Vincent Massol &lt;vincent(a)massol.net >>> >>>>>>> wrote: >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>>> On 31 Oct 2018, at 10:15, Simon Urli &lt;simon.urli(a)xwiki.com&gt; >> wrote: >>>>>>>>>> >>>>>>>>>> Hi, >>>>>>>>>> >>>>>>>>>> On 31/10/2018 09:06, Vincent Massol wrote: >>>>>>>>>>> Hi devs, >>>>>>>>>>> We currently have >>>>>>> >> https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy >>>>>>>>>>> However, it doesn’t say explicitly which versions we officially >>>>>>> support: >>>>>>>>>>> * For HSQLDB it says 2.3.3 which is wrong since the latest >> version >>>>> is >>>>>>> 2.4.1 >>>>>>>>>>> * For MySQL it says 5.x but doesn’t specify which specific >>>>> version(s) >>>>>>>>>>> * Same for other DBs >>>>>>>>>>> We cannot really support every versions since supporting means >>>>>>> testing too. >>>>>>>>>>> So what I propose: >>>>>>>>>>> Question 1: definition >>>>>>>>>>> * We say we support the latest stable version of the databases >> for >>>>> a >>>>>>> given version cycle >>>>>>>>>>> ** For MySQL, it’s the latest of the 5.x cycle, which is 5.7.24 >> as >>>>> of >>>>>>> today (see https://hub.docker.com/_/mysql/) >>>>>>>>>>> ** For PostgreSQL, it’s the latest of the 9.x cycle, which is >>>>> 9.6.10 >>>>>>> as of today (see https://hub.docker.com/_/postgres/) >>>>>>>>>>> ** For Oracle, it’s the latest of the 11.x cycle, which is >>>>> 11.2.0.4.0 >>>>>>> as of today (see >>>>>>> >>>>> >> https://www.oracle.com/technetwork/database/enterprise-edition/downloads/in… >>>>>>> ) >>>>>>>>>> >>>>>>>>>> +1 >>>>>>>>>> >>>>>>>>>>> Question 2: review what we support >>>>>>>>>>> * For MySQL I think we could also start supporting MySQL 8.x (ie >>>>> the >>>>>>> latest version of that cycle). We have an issue open for it >> currently: >>>>>>> https://jira.xwiki.org/browse/XWIKI-15215 >>>>>>>>>>> * For PostgreSQL we could also start supporting versions 11.x (ie >>>>> the >>>>>>> latest version of that cycle) >>>>>>>>>>> * For Oracle, we could also start supporting versions 12.x (ie >> the >>>>>>> latest version of that cycle) >>>>>>>>>> >>>>>>>>>> +0 I don't really know how much effort it involves to ensure the >>>>>>> support of the latest version of each database and to fix the bugs >>>>>>> accordingly. >>>>>>>>>> >>>>>>>>>>> Question 3: decide if we drop some support >>>>>>>>>>> * Is there any cycle that we should support for? Right now I >> think >>>>>>> that MySQL 5.x is still heavily used, same for postgreSQL 9.x I >> guess. >>>>>>> Don’t know for Oracle. >>>>>>>>>>> * Any idea? >>>>>>>>>> >>>>>>>>>> What about the cycles that are bundled in major LTS distributions? >>>>>>>>> >>>>>>>>> You mean the versions from apt-get for ex (when using the default >>>>>>> repos)? >>>>>>>>> >>>>>>>>> Indeed the idea could to follow one of them. Any suggestion for >> which >>>>>>> one to follow and where the info is? >>>>>>>> >>>>>>>> Since we provide Debian package one good reference to know which >>>>>>>> version of MySQL to support IMO would be >>>>>>>> >>>>>>>> >>>>>>> >>>>> >> https://packages.debian.org/search?keywords=mysql-server&searchon=names… >>>>>>>> >>>>>>>> So it would be good to support 5.5 and 5.7 >>>>>>> >>>>>>> Maybe it worth it to also look on Ubuntu packages for the LTS, as >> they >>>>>>> don't follow the same cycle: >>>>>>> https://packages.ubuntu.com/search?keywords=mysql-server >>>>>>> >>>>>>> Apparently for now version are the same than for Debian. >>>>>>>> >>>>>>>> Here is the one for postgresql (since we also have a pgsql based >>>>> Debian >>>>>>> package) >>>>>>>> >>>>>>>> >>>>>>> >>>>> >> https://packages.debian.org/search?keywords=postgresql&searchon=names&a… >>>>>>> >>>>>>> >>>>>>> >>>>> >> https://packages.ubuntu.com/search?suite=default&section=all&arch=a… >>>>>>> >>>>>>> So here I see 9.3, 9.5, 10.5 >>>>>>> >>>>>>>> >>>>>>>> So 9.4, 9.6 and 11 >>>>>>>> >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> -Vinent >>>>>>>>> >>>>>>>>>> >>>>>>>>>> Simon >>>>>>>>>> >>>>>>>>>>> So WDYT about the 3 questions? >>>>>>>>>>> Thanks >>>>>>>>>>> -Vincent >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Simon Urli >>>>>>>>>> Software Engineer at XWiki SAS >>>>>>>>>> simon.urli(a)xwiki.com >>>>>>>>>> More about us at http://www.xwiki.com >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Simon Urli >>>>>>> Software Engineer at XWiki SAS >>>>>>> simon.urli(a)xwiki.com >>>>>>> More about us at http://www.xwiki.com

On 6 Nov 2018, at 10:14, Thomas Mortagne &lt;thomas.mortagne(a)xwiki.com&gt; wrote: On Wed, Oct 31, 2018 at 4:30 PM Vincent Massol &lt;vincent(a)massol.net&gt; wrote: XWiki does not start at all on MySQL 8 so not sure it's a good criteria :)

-- Thomas Mortagne

FYI, I’ve now updated the page at https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy (but I can update/revert if need be). Thanks -Vincent

with: https://packages.debian.org/search?keywords=mysql-server&searchon=names… (i.e. latest of 5.5.x and 5.7.x today) packages.debian.org/search?keywords=postgresql&searchon=names&exact… (i.e. latest of 9.4.x, 9.6.x and 11.x today) start testing on 12.x from now on) is not supported that it doesn’t work nor that we won’t fix it if a problem happens. a single version supported, but since we provide a debian packaging it makes sense to test the versions defined by the debian repos, and now that we have automated functional tests on various configurations, we can test on them. BTW I suggest we run all tests on the latest version only (i.e. 5.7.x for mysql and 11.x for postgresql, and move to mysql 8.x when we fix the bug on it) and then we do smoke tests on the other versions. like to update the page + add the configs in our CI tests. FYI, I’ve now updated the page at https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy (but I can update/revert if need be). Thanks -Vincent https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy 2.4.1 too. given version cycle today (see https://hub.docker.com/_/mysql/) as of today (see https://hub.docker.com/_/postgres/) as of today (see https://www.oracle.com/technetwork/database/enterprise-edition/downloads/in… ) latest version of that cycle). We have an issue open for it currently: https://jira.xwiki.org/browse/XWIKI-15215 latest version of that cycle) latest version of that cycle) MySQL 5.x is still heavily used, same for postgreSQL 9.x I guess. Don’t know for Oracle.

Indeed mysql-server package (version 5.5.9999) leads to mariadb-server-10.1 in current stretch repository. What is surprising is that this is not the case for sid which is more or less supposed to be the future. It's also not the case in Ubuntu which is doing the same thing as sid. On Mon, Nov 12, 2018 at 6:22 PM Eduard Moraru &lt;enygma2002(a)gmail.com&gt; wrote: MariaDB. https://www.debian.org/releases/stable/amd64/release-notes/ch-whats-new.en.… consider wrote: page https://packages.debian.org/search?keywords=mysql-server&searchon=names… need to version problem only that test (i.e. fix I’d wrote: support: is version(s) testing of 9.6.10 11.2.0.4.0 https://www.oracle.com/technetwork/database/enterprise-edition/downloads/in… the that -- Thomas Mortagne

On 13 Nov 2018, at 11:58, Vincent Massol &lt;vincent(a)massol.net&gt; wrote: There are 2 questions here: * Should we add support for MariaDB? And if so which versions. Just found that there’s an official docker image for it so it should be relatively easy to support MariaDB in our docker-based testing framework: https://hub.docker.com/_/mariadb/ (TestContainers also has a wrapper now for MariaDB: https://github.com/testcontainers/testcontainers-java/tree/master/modules/m…). Note that the MariaDB versions don’t match the MySQL versions.

* Should we drop support for MySQL? Thanks -Vincent

On 14 Nov 2018, at 15:58, Eduard Moraru &lt;enygma2002(a)gmail.com&gt; wrote: On Tue, Nov 13, 2018 at 3:21 PM Vincent Massol &lt;vincent(a)massol.net&gt; wrote: Maybe I'm misunderstanding, but it looks like we're mixing XWiki's support of the MariaDB database itself with XWiki's test infrastructure's capability to support a MariaDB database container, which looks a bit off-topic to me. I get that we need it integrated in our tests to detect anomalies, but I don't really see it as an eliminatory criterion.

Thanks, Eduard > > Thanks > -Vincent > >> * Should we drop support for MySQL? >> >> Thanks >> -Vincent >> >>> On 13 Nov 2018, at 11:50, Guillaume Delhumeau < > guillaume.delhumeau(a)xwiki.com&gt; wrote: >>> >>> Hello, >>> >>> We are in a weird situation where we don't say we support MariaDB but >>> "the latest >>> MySQL version of stable Debian repository", which is currently... > MariaDB >>> [1] >>> >>> So we need to update our strategy about this fact. I am currently > setting >>> up a server with debian 9 (stable) and I don't know if I should install >>> MySQL from the Oracle repository our continue with the standard debian >>> package (MariaDB). >>> >>> On my side, I am not against aligning ourself to debian. Basically, all >>> users installing XWiki with our Debian packages are using MariaDB for a >>> year now [2], and we never encounter any problem so far. >>> >>> Thanks, >>> >>> [1] https://packages.debian.org/stretch/default-mysql-server (dep: >>> mariadb-server-10.1) >>> [2] https://www.debian.org/News/2017/20170617.en.html >>> >>> Le lun. 12 nov. 2018 à 18:54, Thomas Mortagne < > thomas.mortagne(a)xwiki.com&gt; a >>> écrit : >>> >>>> Indeed mysql-server package (version 5.5.9999) leads to >>>> mariadb-server-10.1 in current stretch repository. >>>> >>>> What is surprising is that this is not the case for sid which is more >>>> or less supposed to be the future. It's also not the case in Ubuntu >>>> which is doing the same thing as sid. >>>> On Mon, Nov 12, 2018 at 6:22 PM Eduard Moraru &lt;enygma2002(a)gmail.com&gt; >>>> wrote: >>>>> >>>>> I am not up to date on the topic, but I would like to add the fact > that >>>>> Debian 9 ("stretch") has actually dropped MySQL and moved officially > to >>>>> MariaDB, forcefully migrating existing MySQL installed versions to >>>> MariaDB. >>>>> >>>>> >>>> > https://www.debian.org/releases/stable/amd64/release-notes/ch-whats-new.en.… >>>>> >>>>> The default mysql-server package now redirects to MariaDB instead. >>>>> >>>>> If we are going to follow Debian's lead, we might want to at least >>>> consider >>>>> this move. >>>>> >>>>> Thanks, >>>>> Eduard >>>>> >>>>> On Mon, Nov 12, 2018 at 6:38 PM Vincent Massol &lt;vincent(a)massol.net&gt; >>>> wrote: >>>>> >>>>>> >>>>>> >>>>>>> On 12 Nov 2018, at 16:52, Vincent Massol &lt;vincent(a)massol.net&gt; > wrote: >>>>>>> >>>>>>> So we need to conclude on this thread. I’m proposing to update the >>>> page >>>>>> with: >>>>>>> >>>>>>> * HSQLDB - Latest only >>>>>>> * MySQL - latest of oldstable/stable/unstable from >>>>>> >>>> > https://packages.debian.org/search?keywords=mysql-server&searchon=names… >>>>>> (i.e. latest of 5.5.x and 5.7.x today) >>>>>>> * PostgreSQL - latest of oldstable/stable/unstable fromhttps:// >>>>>> > packages.debian.org/search?keywords=postgresql&searchon=names&exact… >>>>>> (i.e. latest of 9.4.x, 9.6.x and 11.x today) >>>>>>> * Oracle - latest of 12.x (we currently test on 11.x AFAIK so we >>>> need to >>>>>> start testing on 12.x from now on) >>>>>>> >>>>>>> Note that by “support" we mean test on. And it’s not because a >>>> version >>>>>> is not supported that it doesn’t work nor that we won’t fix it if a >>>> problem >>>>>> happens. >>>>>>> >>>>>>> I hesitated a long time for the mysql/pgsql versions since I wanted >>>> only >>>>>> a single version supported, but since we provide a debian packaging > it >>>>>> makes sense to test the versions defined by the debian repos, and now >>>> that >>>>>> we have automated functional tests on various configurations, we can >>>> test >>>>>> on them. BTW I suggest we run all tests on the latest version only >>>> (i.e. >>>>>> 5.7.x for mysql and 11.x for postgresql, and move to mysql 8.x when > we >>>> fix >>>>>> the bug on it) and then we do smoke tests on the other versions. >>>>>>> >>>>>>> Let me know quickly if you have a problem with this strategy since >>>> I’d >>>>>> like to update the page + add the configs in our CI tests. >>>>>> >>>>>> FYI, I’ve now updated the page at >>>>>> > https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy >>>>>> (but I can update/revert if need be). >>>>>> >>>>>> Thanks >>>>>> -Vincent >>>>>> >>>>>>> >>>>>>> Thanks >>>>>>> -Vincent >>>>>>> >>>>>>> >>>>>>>> On 31 Oct 2018, at 09:06, Vincent Massol &lt;vincent(a)massol.net&gt; >>>> wrote: >>>>>>>> >>>>>>>> Hi devs, >>>>>>>> >>>>>>>> We currently have >>>>>> > https://dev.xwiki.org/xwiki/bin/view/Community/DatabaseSupportStrategy >>>>>>>> >>>>>>>> However, it doesn’t say explicitly which versions we officially >>>> support: >>>>>>>> * For HSQLDB it says 2.3.3 which is wrong since the latest version >>>> is >>>>>> 2.4.1 >>>>>>>> * For MySQL it says 5.x but doesn’t specify which specific >>>> version(s) >>>>>>>> * Same for other DBs >>>>>>>> >>>>>>>> We cannot really support every versions since supporting means >>>> testing >>>>>> too. >>>>>>>> >>>>>>>> So what I propose: >>>>>>>> >>>>>>>> Question 1: definition >>>>>>>> >>>>>>>> * We say we support the latest stable version of the databases for > a >>>>>> given version cycle >>>>>>>> ** For MySQL, it’s the latest of the 5.x cycle, which is 5.7.24 as >>>> of >>>>>> today (see https://hub.docker.com/_/mysql/) >>>>>>>> ** For PostgreSQL, it’s the latest of the 9.x cycle, which is >>>> 9.6.10 >>>>>> as of today (see https://hub.docker.com/_/postgres/) >>>>>>>> ** For Oracle, it’s the latest of the 11.x cycle, which is >>>> 11.2.0.4.0 >>>>>> as of today (see >>>>>> >>>> > https://www.oracle.com/technetwork/database/enterprise-edition/downloads/in… >>>>>> ) >>>>>>>> >>>>>>>> Question 2: review what we support >>>>>>>> >>>>>>>> * For MySQL I think we could also start supporting MySQL 8.x (ie > the >>>>>> latest version of that cycle). We have an issue open for it > currently: >>>>>> https://jira.xwiki.org/browse/XWIKI-15215 >>>>>>>> * For PostgreSQL we could also start supporting versions 11.x (ie >>>> the >>>>>> latest version of that cycle) >>>>>>>> * For Oracle, we could also start supporting versions 12.x (ie the >>>>>> latest version of that cycle) >>>>>>>> >>>>>>>> Question 3: decide if we drop some support >>>>>>>> >>>>>>>> * Is there any cycle that we should support for? Right now I think >>>> that >>>>>> MySQL 5.x is still heavily used, same for postgreSQL 9.x I guess. > Don’t >>>>>> know for Oracle. >>>>>>>> * Any idea? >>>>>>>> >>>>>>>> So WDYT about the 3 questions? >>>>>>>> >>>>>>>> Thanks >>>>>>>> -Vincent >>>>>>> >>>>>> >>>>>> >>>> >>>> >>>> >>>> -- >>>> Thomas Mortagne >>>> >>> >>> >>> -- >>> Guillaume Delhumeau (guillaume.delhumeau(a)xwiki.com) >>> Research & Development Engineer at XWiki SAS >>> Committer on the XWiki.org project

BTW on this point, the issue I had was fixed in https://github.com/testcontainers/testcontainers-java/pull/950 (just need to wait for the next release to get it now, shouldn’t be too long). Thanks -Vincent