public String getNodeStatusWithReason() {
    NodeStatistics statistics = (NodeStatistics) this.currentStatistics.get();
    return statistics.getStatusReason() == null
        ? statistics.getStatus().getStatus()
        : statistics.getStatus().getStatus() + "(" + statistics.getStatusReason() + ")";
  }
@return The reason why lead to current NodeStatus.
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/manager/load/cache/node/BaseNodeCache.java