code: public static String task2compName(String old) {
          String[] parts = old.split(DELIM);
          if (parts.length >= 7) {
              parts[0] = MetaType.COMPONENT.getV() + parts[0].charAt(1);
              parts[parts.length - 3] = EMPTY;
              parts[parts.length - 4] = "0";
          }
          return concat(parts);
      }
docs: make taskId=0 and streamId empty.