@Override
  public TriggerFireResult process(PlanNode node, TriggerEvent context) {
    if (TriggerManagementService.getInstance().isTriggerTableEmpty()) {
      return TriggerFireResult.SUCCESS;
    }
    return node.accept(this, context);
  }
How many times should we retry when error occurred during firing a trigger on another datanode.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/trigger/executor/TriggerFireVisitor.java