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list=mostviewed returning zero results on enwiki
Open, Needs TriagePublicBUG REPORT

Description

A recently deployed change to Recommendation-API had to be rolled back because list=mostviewed started returning zero results after midnight UTC today, causing an endpoint check to alert on an unexpected 404 response (T216750#5508340).

A zero-result response from list=mostviewed seems like a bug because the PageViewInfo code takes steps to work around the normal AQS pageviews processing delay, and because there's no indication in the API docs that a zero-result response is to be expected.

Steps to Reproduce:

Actual Results: zero-page result

Expected Results: nonzero-page result

Event Timeline

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptFri, Sep 20, 1:31 AM
Mholloway updated the task description. (Show Details)Fri, Sep 20, 1:33 AM