⚓ T408105 ImageBrowsing: launch the A/B test on first set of wikis

		Status	Subtype	Assigned	Task
		Resolved		egardner	T398495 [Epic] Image Browsing: Set up analytics and instrumentation
		Resolved		mfossati	T408105 ImageBrowsing: launch the A/B test on first set of wikis

mfossati created this task.Oct 23 2025, 12:07 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptOct 23 2025, 12:07 PM

mfossati added a parent task: T398495: [Epic] Image Browsing: Set up analytics and instrumentation.Oct 23 2025, 12:08 PM

mfossati moved this task from Incoming/Inbox to Needs Refinement on the Reader Growth Team board.

ovasileva triaged this task as High priority.Oct 23 2025, 1:53 PM

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ovasileva added subscribers: EBlackorby-WMF, ovasileva.

egardner set the point value for this task to 3.Oct 23 2025, 4:59 PM

egardner moved this task from Needs Refinement to Ready on the Reader Growth Team board.

egardner updated the task description. (Show Details)Oct 23 2025, 5:10 PM

ovasileva renamed this task from ImageBrowsing: launch the A/B test to ImageBrowsing: launch the A/B test on first set of wikis.Oct 27 2025, 8:00 AM

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ovasileva moved this task from Ready to Sprint 3 (Oct 28 - Nov 10) Q2 25/26 on the Reader Growth Team board.Oct 28 2025, 4:40 PM

ovasileva edited projects, added Reader Growth Team (Sprint 3 (Oct 28 - Nov 10) Q2 25/26); removed Reader Growth Team.

mfossati mentioned this in T407268: ImageBrowsing: instrumentation data QA.Oct 28 2025, 5:25 PM

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mfossati changed the task status from Open to In Progress.Oct 29 2025, 3:43 PM

mfossati moved this task from Committed to Doing on the Reader Growth Team (Sprint 3 (Oct 28 - Nov 10) Q2 25/26) board.

Scheduled backport of latest translations: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ReaderExperiments/+/1199814

mfossati updated the task description. (Show Details)Oct 29 2025, 3:55 PM

mfossati updated the task description. (Show Details)Oct 30 2025, 3:20 PM

mfossati updated the task description. (Show Details)Oct 31 2025, 11:48 AM

The train was blocked until yesterday and is now unblocked, see T405681: 1.45.0-wmf.25 deployment blockers.
I’ve verified the backported patches in production as per ticket's description and they all look good.

mfossati updated the task description. (Show Details)Oct 31 2025, 12:41 PM

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mfossati moved this task from Doing to QA on the Reader Growth Team (Sprint 3 (Oct 28 - Nov 10) Q2 25/26) board.Nov 4 2025, 4:59 PM

Kafka events QA

I've checked a sample of the most recent 100k events via kafkacat -C -b kafka-jumbo1016.eqiad.wmnet:9092 -t eqiad.mediawiki.product_metrics.readerexperiments_imagebrowsing -o -100000 -e:

action='image_carousel_load' action_source='init' ✅
action='image_carousel_load' action_source='close' ✅
action='click' action_subtype='view_image' action_source='image_carousel action_context='image1' ✅
action='click' action_subtype='view_image' action_source='image_carousel' ✅
action='click' action_subtype='view_image' action_source='visual_table_of_contents' ✅
action='click' action_subtype='full_image' action_source='detail_view' ✅
action='click' action_subtype='share' action_source='detail_view' ✅
action='click' action_subtype='commons' action_source='detail_view' ✅
action='click' action_subtype='download' action_source='detail_view' ✅
action='click' action_subtype='more' action_source='detail_view' ✅
action='click' action_subtype='view_in_article' action_source='visual_table_of_contents' ✅
action='click' action_subtype='caption_link' action_source='detail_view' ✅
action='click' action_subtype='caption_link' action_source='visual_table_of_contents' ✅
action='page-visited ✅

Everything looks good to me, we can sign this off as soon as T408104 & T406013 are done.

mfossati updated the task description. (Show Details)Nov 5 2025, 4:53 PM

Shizhao added a project: Chinese-Sites.Nov 11 2025, 3:28 AM

Shizhao moved this task from Backlog to Research on the Chinese-Sites board.

mfossati updated the task description. (Show Details)Nov 11 2025, 1:00 PM

mfossati updated the task description. (Show Details)Nov 11 2025, 1:03 PM

mfossati mentioned this in T409739: ImageBrowsing: launch the A/B test on English Wikipedia.Nov 12 2025, 11:04 AM

I'm gonna close this one, as engineering work is done. If anything comes up with T406013: Configure analytics dashboards for ImageBrowsing's A/B test, I'll file a new ticket.

Stang moved this task from Research to Closed on the Chinese-Sites board.Nov 12 2025, 5:31 PM

mfossati mentioned this in T412146: Launch Mobile Expanded Sections on non-English wikis.Dec 9 2025, 7:11 PM

mfossati mentioned this in T412147: Launch Mobile Expanded Sections on Enwiki.Dec 10 2025, 11:26 AM

matthiasmullie added a project: ReaderExperiments-ImageBrowsing.Jan 6 2026, 1:20 PM

Restricted Application edited projects, added Reader Growth Team; removed Reader Growth Team (Sprint 3 (Oct 28 - Nov 10) Q2 25/26). · View Herald TranscriptJan 6 2026, 1:20 PM

Aklapper edited projects, added Reader Growth Team (Sprint 3 (Oct 28 - Nov 10) Q2 25/26); removed Reader Growth Team.Jan 6 2026, 1:58 PM