lib/mongo/operation/parallel_scan/command.rb in mongo-2.14.1 vs lib/mongo/operation/parallel_scan/command.rb in mongo-2.15.0.alpha

@@ -35,10 +35,11 @@
           if read_concern
             sel[:readConcern] = Options::Mapper.transform_values_to_strings(
               read_concern)
           end
           sel[:maxTimeMS] = max_time_ms if max_time_ms
-          add_read_preference_legacy(sel, connection)
+          update_selector_for_read_pref(sel, connection)
+          sel
         end
 
         def message(connection)
           Protocol::Query.new(db_name, Database::COMMAND, command(connection), options(connection))
         end