@Override
  public int compareTo(@NotNull DriverTaskId o) {
    return String.CASE_INSENSITIVE_ORDER.compare(this.toString(), o.toString());
  }
the class of id of the pipeline driver task.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/schedule/task/DriverTaskId.java