See T307328: Scalability issues of recentchanges table

Resetting task status from "In Progress" to "Open" as this task has been "in progress" for more than one year (see T380300). Feel free to set that status again, or rather break down into smaller subtasks.

Closing sprint 4 and marking as resolved!

Change #1122577 merged by jenkins-bot:

[mediawiki/extensions/EventBus@master] Migrate MediaWiki.jobexecutor to statslib

https://gerrit.wikimedia.org/r/1122577

Change #1122577 had a related patch set uploaded (by Atieno; author: Atieno):

[mediawiki/extensions/EventBus@master] Migrate MediaWiki.jobexecutor to statslib

https://gerrit.wikimedia.org/r/1122577

I updated the description as well as I could. https://www.mediawiki.org/w/index.php?oldid=7020917 I think this is good enough, and the main problem (The database tear-down failed) vanished.

In T378434#10342998, @kostajh wrote:

• There is also a composer script in core that creates a phpunit.xml file (not in version control) for you, with the coverage paths already set. composer phpunit:coverage-edit -- extensions/Math. Then you'd run phpunit -c phpunit.xml

Change #1100886 had a related patch set uploaded (by Aaron Schulz; author: Aaron Schulz):

[mediawiki/core@master] [WIP] rdbms: let entry points control LBFactory implicit transaction rounds

https://gerrit.wikimedia.org/r/1100886