--- a/src/main/java/app/bbs/BulletinBoardJungleManager.java	Tue Jan 28 08:47:45 2014 +0900
+++ b/src/main/java/app/bbs/BulletinBoardJungleManager.java	Tue Jan 28 09:16:39 2014 +0900
@@ -2,8 +2,8 @@
 
 import java.nio.ByteBuffer;
 import java.util.Date;
+import java.util.concurrent.atomic.AtomicInteger;
 
-import javax.naming.directory.Attribute;
 
 import alice.jungle.operations.NetworkTreeOperationLog;
 import alice.jungle.transaction.JungleUpdater;
@@ -11,8 +11,6 @@
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.Jungle;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
-import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Attributes;
-import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Children;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Node;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultNodePath;
 import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.DefaultTreeEditor;
@@ -23,11 +21,20 @@
 public class BulletinBoardJungleManager {
 	private static BulletinBoardJungleManager instance = new BulletinBoardJungleManager();
 	private Jungle jungle;
+	private static AtomicInteger requestCounter = new AtomicInteger(0);
 
 	private BulletinBoardJungleManager() {
 		jungle = new DefaultJungle(null,"default",new DefaultTreeEditor(new DefaultTraverser()));
 	}
 	
+	public static int requestGetAndIncrement() {
+		return requestCounter.getAndIncrement();
+	}
+	
+	public static int requestIncrementAndGet() {
+		return requestCounter.incrementAndGet();
+	}
+	
 	public static BulletinBoardJungleManager getInstantce() {
 		return instance;
 	}
@@ -35,6 +42,9 @@
 	public static void setJungle(Jungle _j) {
 		instance.jungle = _j;
 	}
+	public static AtomicInteger getRequestCounter() {
+		return requestCounter;
+	}
 	
 	public static Jungle getJungle() {
 		return instance.jungle;
@@ -52,8 +62,6 @@
 				throw new IllegalStateException();
 			}
 		}
-
-
 		Either<Error, JungleTreeEditor> either = null;
 		JungleTree tree = jungle.getTreeByName(treeName);
 		
@@ -73,6 +81,7 @@
 		}while(either.isA());
 
 		renewBoardTimeStamp(tree);
+		requestCounter.incrementAndGet();
 		return either;
 	}
 	
@@ -86,10 +95,12 @@
 		Either<Error, JungleTreeEditor> either = null;
 		do {
 			either = editor.putAttribute(root, "renewtime", tBuffer);
+			if(either.isA()) {
+				throw new IllegalStateException();
+			}
 			editor = either.b();
 			either = editor.success();
 		}while(either.isA());
-
 	}
 	
 	private static int calculatePosition(Node node, long newNodeTimeStamp) {

--- a/src/main/java/app/bbs/NetworkJungleBulletinBoard.java	Tue Jan 28 08:47:45 2014 +0900
+++ b/src/main/java/app/bbs/NetworkJungleBulletinBoard.java	Tue Jan 28 09:16:39 2014 +0900
@@ -35,7 +35,7 @@
 	private final NetworkJournal journal;
 	private final String LOG_DIR;
 	private Boolean persistentFlag;
-	private  AtomicInteger requestCounter = new AtomicInteger(0);
+	private  AtomicInteger requestCounter;
 	
 	private NetworkJungleBulletinBoard(String _uuid, NetworkJournal _journal) 
 	{
@@ -43,6 +43,7 @@
 		jungle = new NetworkDefaultJungle(journal, _uuid,new DefaultTreeEditor(new DefaultTraverser()));
 		BulletinBoardJungleManager.setJungle(jungle);
 		persistentFlag = false;
+		requestCounter = BulletinBoardJungleManager.getRequestCounter();
 		LOG_DIR = "./log";
 	}
 	
@@ -202,7 +203,10 @@
 			throw new IllegalStateException();
 		}
 		either.b().success();
-		
+
+		/* 
+		 * Record latest renew time 
+		 */
 		editor = tree.getLocalTreeEditor();
 		either = editor.putAttribute(root, "renewtime", tBuffer);
 		either.b().success();