initParamMap.putAll(configParamMap);
        final DataStoreParams paramMap = initParamMap;

        // default values
        final Map<String, Object> defaultDataMap = new HashMap<>();

        // cid
        final String configId = config.getConfigId();
        if (configId != null) {
            defaultDataMap.put(fessConfig.getIndexFieldConfigId(), configId);
        }
        //  expires