@Trizek-WMF - Should we let impacted wikis know in advance? Or since communities have been asking for this, do you think it's OK to make the change and then let them know?
(If you want to update wikis in advance, what release date should we set?)

As I understand it, one consideration is that mentors will start to get ~20% more mentees (and thus more mentee questions) after this change.

I can work on this once @Trizek-WMF / @KStoller-WMF define a deployment date here. FTR, this would be a config change, which means we can deploy it at any day (except Fridays and weekends).

Note that most wikis are already at 100%. This change will affect the following wikis, which are at 80% now:

• arwiki
• bnwiki
• cswiki
• dewiki
• eswiki
• fawiki
• ptwiki
• trwiki

In addition to that, enwiki and eswiki don't have mentorship enabled for 100% of users, but only for 10% (enwiki) and 15% (eswiki). I don't think changing this in scope of this task, but mentioning this for completeness.

dewiki has a control group at their demand, as they want to figure out if our features improve retention locally.

In T320876#8342832, @Trizek-WMF wrote:

dewiki has a control group at their demand, as they want to figure out if our features improve retention locally.

Thanks for pointing that out! The comments in the server configuration says control group at dewiki was made because it has more than 500 new users a month, I guess that's out of date information.

I'll follow up with them (@KStoller-WMF FYI).

In T320876#8345602, @Trizek-WMF wrote:

I'll follow up with them (@KStoller-WMF FYI).

Thank you! Do you want to wait until we hear from dewiki before setting a release date then?

We can either wait, or do the change without them and then catch-up.

Per meeting decision of the day, we will end control groups. The set date is November 2, 2022.

An exception will be made for German Wikipedia. But if our contacts there agree on ending the control group as well at this date, they will be included as well.

Change 851604 had a related patch set uploaded (by Urbanecm; author: Urbanecm):

[operations/mediawiki-config@master] Deploy Growth features to 100% users at all wikis but dewiki

https://gerrit.wikimedia.org/r/851604

This is scheduled for tomorrow, 2022-11-02, UTC morning window (07:00 UTC).

Change 851604 merged by jenkins-bot:

[operations/mediawiki-config@master] Deploy GrowthExperiments to 100% users at all wikis but dewiki

https://gerrit.wikimedia.org/r/851604

Mentioned in SAL (#wikimedia-operations) [2022-11-02T07:01:56Z] <urbanecm@deploy1002> Started scap: Backport for [[gerrit:851604|Deploy GrowthExperiments to 100% users at all wikis but dewiki (T320876)]]

Mentioned in SAL (#wikimedia-operations) [2022-11-02T07:02:23Z] <urbanecm@deploy1002> urbanecm and urbanecm: Backport for [[gerrit:851604|Deploy GrowthExperiments to 100% users at all wikis but dewiki (T320876)]] synced to the testservers: mwdebug1002.eqiad.wmnet, mwdebug2001.codfw.wmnet, mwdebug2002.codfw.wmnet, mwdebug1001.eqiad.wmnet

Mentioned in SAL (#wikimedia-operations) [2022-11-02T07:06:34Z] <urbanecm@deploy1002> Finished scap: Backport for [[gerrit:851604|Deploy GrowthExperiments to 100% users at all wikis but dewiki (T320876)]] (duration: 04m 38s)

This is done for all wikis but dewiki. Moving to In Progress, pending clarification on how to proceed with dewiki (fyi @Trizek-WMF).

I think we can close when QA is done: German Wikipedia's working group will have a meeting about their control group in the coming months, and they will then have to decide on what to do.

T322234: Ensure all newcomers receive Growth features at German Wikipedia (end the 20% control group) will track it.

On my side, I updated the deployment table.