public boolean isReady() {
    try {
      checkReady();
      return true;
    } catch (Exception e) {
      if (printLogWhenEncounterException) {
        logger.error(
            "Unexpected exception occurs in {}, error msg is {}",
            this,
            ExceptionUtils.getRootCause(e).toString());
      }
      return false;
    }
  }
Call this method when needed to temporarily modify the timeout period. The original timeout
will be saved and automatically restored when the client is returned.
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/client/async/AsyncConfigNodeInternalServiceClient.java