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Deprecate mediawiki revision-score stream
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Description

As an engineer,
I want to remove the mediawiki revision-score stream
so that we can reduce traffic volume in ORES and ease its deprecation.

Event Timeline

Change 956775 had a related patch set uploaded (by Elukey; author: Elukey):

[operations/deployment-charts@master] services: remove mediawiki.revision-score from eventstreams

https://gerrit.wikimedia.org/r/956775

From this query it seems that only one IP address has been active in the few weeks. It is difficult to follow up with them, it seems a stream running in a cloud provider but it seems not possible to get the UA or similar from our metrics and logs.

We also have https://github.com/google/wikiloop-doublecheck/issues/444 but I don't see any metric indicating that they are using the stream.

Change 956775 merged by Elukey:

[operations/deployment-charts@master] services: remove mediawiki.revision-score from eventstreams

https://gerrit.wikimedia.org/r/956775

Mentioned in SAL (#wikimedia-operations) [2023-09-14T09:52:20Z] <elukey> remove the 'mediawiki.revision-score' stream form eventstreams public API - T342116

Change 957687 had a related patch set uploaded (by Elukey; author: Elukey):

[operations/deployment-charts@master] services: disable Changeprop's ORES Cache stream

https://gerrit.wikimedia.org/r/957687

We have disabled the revision-score stream from Eventstreams, so it is not published anymore in https://stream.wikimedia.org/.

Next steps:

  1. Merge https://gerrit.wikimedia.org/r/957687 to disable the stream from Changeprop (so no more events published even internally).
  2. Observe how it affects ORES (since a side effect of this disable action is to not precache scores anymore).

Change 957687 merged by Elukey:

[operations/deployment-charts@master] services: disable Changeprop's ORES Cache stream

https://gerrit.wikimedia.org/r/957687

Mentioned in SAL (#wikimedia-operations) [2023-09-18T09:59:53Z] <elukey> remove ores-cache stream from changeprop (side effects - higher ORES client latencies, no mediawiki.revision-score event stream published) - https://phabricator.wikimedia.org/T342116

Email sent to Wikitech-l, the task is completed. Let's leave it open for a couple of days to see if everything works as expected.