public List<TriggerExecutor> getAllTriggerExecutors() {
    return new ArrayList<>(executorMap.values());
  }
Get DataNodeLocation of the given StatefulTrigger.

@param triggerName given trigger
@return TDataNodeLocation of DataNode where instance of given stateful trigger is on. Null if
    trigger not found.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/trigger/service/TriggerManagementService.java