Building off https://phabricator.wikimedia.org/T287511, we need to run the MediaModeration script and count instances of the two debug messages:
- Response from PhotoDNA $responseBody["Status"]["Code"] should be 3000
- this is currently logged at debug level here, though we haven't yet confirmed by checking debug on mwmaint: https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/MediaModeration/+/refs/heads/master/src/RequestModerationCheck.php#197
- Queuing the file processing job
- this is currently logged at debug level here, though we haven't yet confirmed by checking debug on mwmaint: https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/MediaModeration/+/refs/heads/master/src/MediaModerationService.php#81
- this is also currently noted by printing `.` to console here: https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/MediaModeration/+/refs/heads/master/maintenance/includes/ModerateExistingFilesHelper.php#88
And compare the two to find out how high the error rate.
First, we need to confirm the new debug code is on mwmaint by 2022-05-19, and if not, find out why.