Changes/MariaDB 10.5

MariaDB 10.5

Summary

Update of MariaDB ('mariadb' package) in Fedora from 10.4 to 10.5 version.

Owner

• Name: Michal Schorm
• Email: mschorm@redhat.com
• Release notes owner:

Current status

• Targeted release: Fedora 34
• Last updated: 2020-11-30
• FESCo issue: #2499
• Tracker bug: #1902800
• Release Notes tracking: #608

Detailed Description

Update of MariaDB package in Fedora from 10.4 version to 10.5 version.

Benefit to Fedora

I'm cooperating with the upstream to bring the latest stable software to Fedora users.

10.5 series introduces number of enhancements, which cannot be found in previous series. Overview of the new features can be found here: https://mariadb.com/kb/en/changes-improvements-in-mariadb-105/

Scope

• Proposal owners:
  • Prepare MariaDB 10.4 as a module for Rawhide and atleast one stable Fedora release (done)
    so users which want to stay on the current release have the possibility.
    This also serve as a failover mechanism in case of issues with the 10.5.
  • Prepare MariaDB 10.5 as a module for Rawhide and atleast one stable Fedora release (done)
    so users can test the 10.5 in advance. (installing 10.5 module on already stable release)
    This also serve as a upgrade path - users can install 10.5 module on Fedora release which have 10.4 in base; and then upgrade to 10.5 module on a Fedora release which will have 10.5 in base.
  • Release MariaDB 10.5 to Rawhide (blocked; 10.5 modules needs testing first, I got first positive responses)
  • Check software that requires or depends on 'mariadb' or 'galera' package for incompatibilities
    This shouldn't be an issue in general, as vast majority of the software requires client library, provided by "mariadb-connector-c" package, which won't change.
  • Gather user input on the changes between MariaDB 10.4 and 10.5

• Other developers: N/A (not a System Wide Change)

• Release engineering: (a check of an impact with Release Engineering is needed)
  • List of deliverables: N/A (not a System Wide Change)

• Policies and guidelines: N/A (not a System Wide Change)

• Trademark approval: N/A (not needed for this Change)

Upgrade/compatibility impact

The MariaDB client library is compatible, so the shouldn't be any issues and / or need for rebuild of dependent packages.

UPDATE (10/2020)

MariaDB 10.5 modules are now available for Fedora Rawhide, Fedora 33, Fedora 32 and Fedora 31

How To Test

Usual testing as when upgrading between major MariaDB versions.

Test that all other software runs well with MariaDB 10.5. Report any issues, so I can reach the different upstreams and check if they plan update their software to support MariaDB 10.5 and when.

User Experience

The users will have to upgrade their databases the same way as between major MariaDB versions.

If the users want to stick with MariaDB 10.4 for a little longer, the MariaDB 10.4 module is available for them in all stable Fedora releases as well as in Rawhide. If the users want to test the 10.5 series beforehand, the MariaDB 10.5 module is available.

Dependencies

Since the client library ('mariadb-connector-c') is not changing, dependent software should work fine.

Only a rare cases builds against the server part of MariaDB. (e.g. building a server plugin)

Packages that require the server (embedded) library "libmariadbd.so.19" are the only one that might need rebuild. Currently this is only a single package 'amarok', so I can cooperate with its maintainer if rebuild would be needed.

UPDATE 11/2020:
I checked the ABI compatiblity and the report can be found here:
https://mschorm.fedorapeople.org/abipkgdiff_mariadb-embedded_104-105
I tried to rebuild 'amarok' package in the COPR on top of the MariaDB 10.5 and it woked well:
https://copr.fedorainfracloud.org/coprs/mschorm/MariaDB_10.5_rebuild_test_area/builds/
I contacted the 'amarok' package mainatiner and we agreed on me submitting PR ofr 'amarok' package rebuild, once the MariaDB 10.5 land in Rawhide.

Contingency Plan

• Contingency mechanism: In the worst case scenario, I would be forced to revert the change, bump MariaDB 10.4 package epoch and release F34 with MariaDB 10.4 instead.
• Contingency deadline: Beta freeze.
• Blocks release? N/A (not a System Wide Change)
• Blocks product? N/A (not a System Wide Change)

Documentation

Upgrade startegy: https://mariadb.com/kb/en/library/upgrading-from-mariadb-104-to-mariadb-105/

Upgrading and incompatibilities: https://mariadb.com/kb/en/library/upgrading-from-mariadb-104-to-mariadb-105/#incompatible-changes-between-104-and-105

Release Notes

Release notes for each release: https://mariadb.com/kb/en/library/release-notes-mariadb-105-series/

Overall overview of the changes and improvements: https://mariadb.com/kb/en/library/changes-improvements-in-mariadb-105/