protected void reloadMetaStore(StringBuilder strBuff) {
        // Clear observers' cache data.
        for (ConfigObserver observer : eventObservers) {
            observer.clearCacheData();
        }
        // Load the latest meta-data from persistent
        clusterConfigMapper.loadConfig(strBuff);
        brokerConfigMapper.loadConfig(strBuff);
        topicDeployMapper.loadConfig(strBuff);
        topicCtrlMapper.loadConfig(strBuff);
        groupResCtrlMapper.loadConfig(strBuff);
        consumeCtrlMapper.loadConfig(strBuff);
        // load the latest meta-data to observers
        for (ConfigObserver observer : eventObservers) {
            observer.reloadCacheData();
        }
    }
Reload meta-data stores.

@param strBuff  the string buffer
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/master/metamanage/metastore/impl/AbsMetaConfigMapperImpl.java