Per our data retention guidelines we should not retain long term articles read by users + sessionId. Please see: https://meta.wikimedia.org/wiki/Data_retention_guidelines#How_long_do_we_retain_non-public_data?
I am not sure if this schema is used but if so its whitelist settings should be adjusted.
Popups:
event: action: keep api: keep checkin: keep duration: keep editCountBucket: keep hovercardsSuppressedByGadget: keep isAnon: keep linkInteractionToken: keep namespaceIdHover: keep namespaceIdSource: keep pageIdSource: keep pageTitleHover: keep -> should be removed pageTitleSource: keep -> shoudl be removed pageToken: keep perceivedWait: keep popupDelay: keep popupEnabled: keep previewCountBucket: keep previewType: keep sessionID: keep -> should be removed sessionToken: keep totalInteractionTime: keep version: keep webHost: keep wiki: keep