@Override
    public void shutdown() {
        if (isOldStorageExist()) {
            this.oldLogStorage.shutdown();
        }
        this.newLogStorage.shutdown();
    }
HybridLogStorage is used to be compatible with new and old logStorage
@author hzh (642256541@qq.com)
jraft-extension/java-log-storage-impl/src/main/java/com/alipay/sofa/jraft/storage/HybridLogStorage.java