check_ids.rb

      Person.find_in_batches({ }, fl: 'id') do |group|
        group.each do |hit|
          begin
            puts "Got #{hit['id']}"
            ActiveFedora::Base.find(hit['id'])
          rescue ActiveFedora::ObjectNotFoundError
            puts "  couldn't be found"
          rescue Ldp::Gone
            ActiveFedora::Base.logger.error "Although #{hit['id']} was found in Solr, it doesn't seem to exist in Fedora. The index is out of synch." if ActiveFedora::Base.logger
          end
        end
      end