public void checkClusterStatusOneUnknownOtherRunning() {
    checkClusterStatus(
        nodeStatus -> {
          Map<String, Integer> count = countNodeStatus(nodeStatus);
          return count.getOrDefault("Unknown", 0) == 1
              && count.getOrDefault("Running", 0) == nodeStatus.size() - 1;
        });
    testJDBCConnection();
  }
This config object stores the properties set by developers during the test. It will be cleared
after each call of cleanupEnvironment.
integration-test/src/main/java/org/apache/iotdb/it/env/cluster/env/AbstractEnv.java