--- a/src/alice/jungle/datasegment/store/operations/DefaultNodeOperationContainer.java	Mon Jul 15 18:26:10 2013 +0900
+++ b/src/alice/jungle/datasegment/store/operations/DefaultNodeOperationContainer.java	Fri Jul 19 11:08:04 2013 +0900
@@ -15,6 +15,8 @@
 import org.msgpack.template.OrdinalEnumTemplate;
 import org.msgpack.type.Value;
 
+import alice.codesegment.SingletonMessage;
+
 @Message
 public class DefaultNodeOperationContainer {
 
@@ -42,7 +44,8 @@
 	}
 
 	public void unconvert(NodeOperation op) throws IOException {
-		MessagePack msgpack = new MessagePack();
+//		MessagePack msgpack = new MessagePack();
+		MessagePack msgpack = SingletonMessage.getInstance();
 		pos = op.getPosition();
 		key = op.getKey();
 		value = null;
@@ -59,7 +62,8 @@
 	}
 	
 	public NodeOperation convert() throws IOException{
-		MessagePack msgpack = new MessagePack();
+//		MessagePack msgpack = new MessagePack();
+		MessagePack msgpack = SingletonMessage.getInstance();
 		msgpack.register(Command.class, new OrdinalEnumTemplate(Command.class));
 		Command c = msgpack.convert(commandValue, Command.class);
 		ByteBuffer b = null;