+ Job.reset_column_information
+ Job.update_all({state: 'Cancelled'}, ['state is null and cancelled_at is not null'])
+ Job.update_all({state: 'Failed'}, ['state is null and success = ?', false])
+ Job.update_all({state: 'Complete'}, ['state is null and success = ?', true])
+ Job.update_all({state: 'Running'}, ['state is null and running = ?', true])
+ # Locked/started, but not Running/Failed/Complete? Let's assume it failed.
+ Job.update_all({state: 'Failed'}, ['state is null and (is_locked_by_uuid is not null or started_at is not null)'])
+ Job.update_all({state: 'Queued'}, ['state is null'])