code: private void restoreKVStateMetaData() throws IOException, StateMigrationException {
  		KeyedBackendSerializationProxy<K> serializationProxy = readMetaData(currentStateHandleInView);
  
  		this.keygroupStreamCompressionDecorator = serializationProxy.isUsingKeyGroupCompression() ?
  			SnappyStreamCompressionDecorator.INSTANCE : UncompressedStreamCompressionDecorator.INSTANCE;
  
  		List<StateMetaInfoSnapshot> restoredMetaInfos =
  			serializationProxy.getStateMetaInfoSnapshots();
  		currentStateHandleKVStateColumnFamilies = new ArrayList<>(restoredMetaInfos.size());
  
  		for (StateMetaInfoSnapshot restoredMetaInfo : restoredMetaInfos) {
  			RocksDbKvStateInfo registeredStateCFHandle =
  				getOrRegisterStateColumnFamilyHandle(null, restoredMetaInfo);
  			currentStateHandleKVStateColumnFamilies.add(registeredStateCFHandle.columnFamilyHandle);
  		}
  	}
docs: Restore the KV-state / ColumnFamily meta data for all key-groups referenced by the current state handle.