private void saveStatusCheckpoint() {
        this.statusCheckpoint.isOldStorageExist = this.isOldStorageExist;
        try {
            // Save status
            this.statusCheckpoint.save();
        } catch (final IOException e) {
            LOG.error("Error happen when save hybrid status checkpoint", e);
        }
    }
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