diff --git a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
index 069d1ce..c78d451 100644
--- a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
+++ b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
@@ -1036,31 +1036,6 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 		}
 		return toReturn;
 	}
-	/**
-	 * 
-	 * @param userid  user identifier
-	 * @return simply return a list of user messages notifications UUID in chronological order from the oldest to the more recent
-	 */
-	private ArrayList<String> getUserMessagesNotificationsIds(String userid) {
-		OperationResult<Rows<String, String>> result = null;
-		try {
-			result = conn.getKeyspace().prepareQuery(cf_UserMessageNotifications)
-					.getKeySlice(userid)
-					.execute();
-		} catch (ConnectionException e) {
-			e.printStackTrace();
-		}
-
-		ArrayList<String> toReturn = new ArrayList<String>();
-
-		// Iterate rows and their columns 
-		for (Row<String, String> row : result.getResult()) {
-			for (Column<String> column : row.getColumns()) {
-				toReturn.add(column.getStringValue());
-			}
-		}
-		return toReturn;
-	}
 	/**
 	 * Returns UUIDS of not read user notification messages
 	 * @param userid  user identifier
diff --git a/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java b/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java
index 7d658f2..b061158 100644
--- a/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java
+++ b/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java
@@ -18,7 +18,10 @@ import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
+import com.google.gwt.thirdparty.guava.common.collect.ImmutableMap;
 import com.netflix.astyanax.connectionpool.exceptions.ConnectionException;
+import com.netflix.astyanax.model.ColumnFamily;
+import com.netflix.astyanax.serializers.StringSerializer;
 
 public class DatabookCassandraTest {
 	private static DBCassandraAstyanaxImpl store;
@@ -190,39 +193,30 @@ public class DatabookCassandraTest {
 	//	}
 
 
-	//	/**
-	//	 * use exclusively to add a new (Dynamic) CF to a keyspace
-	//	 */
-	//	@Test
-	//	public void addInvitesDynamicColumnFamilies() {
-	//		System.out.println("addInvitesColumnFamilies");
-	//		ColumnFamily<String, String> cf_HashtagsCounter =	new ColumnFamily<String, String>(
-	//				DBCassandraAstyanaxImpl.VRE_INVITES,        // Column Family Name
-	//				StringSerializer.get(),   // Key Serializer
-	//				StringSerializer.get());  // Column Serializer
-	//		ColumnFamily<String, String> cf_HashtagTimeline =	new ColumnFamily<String, String>(
-	//				DBCassandraAstyanaxImpl.EMAIL_INVITES,  // Column Family Name
-	//				StringSerializer.get(),   // Key Serializer
-	//				StringSerializer.get());  // Column Serializer
-	//
-	//		try {
-	//			new CassandraClusterConnection(false).getKeyspace().createColumnFamily(cf_HashtagsCounter, ImmutableMap.<String, Object>builder()
-	//					.put("default_validation_class", "UTF8Type")
-	//					.put("key_validation_class",     "UTF8Type")
-	//					.put("comparator_type",          "UTF8Type")
-	//					.build());
-	//			
-	//			new CassandraClusterConnection(false).getKeyspace().createColumnFamily(cf_HashtagTimeline, ImmutableMap.<String, Object>builder()
-	//					.put("default_validation_class", "UTF8Type")
-	//					.put("key_validation_class",     "UTF8Type")
-	//					.put("comparator_type",          "UTF8Type")
-	//					.build());
-	//			
-	//		} catch (ConnectionException e) {
-	//			e.printStackTrace();
-	//		}
-	//		System.out.println("addInvitesColumnFamilies END");
-	//	}
+//		/**
+//		 * use exclusively to add a new (Dynamic) CF to a keyspace
+//		 */
+//		@Test
+//		public void addInvitesDynamicColumnFamilies() {
+//			System.out.println("UserNotificationsUnread");
+//			ColumnFamily<String, String> cf_UserNotificationsUnreadTimeline =	new ColumnFamily<String, String>(
+//					DBCassandraAstyanaxImpl.USER_NOTIFICATIONS_UNREAD,  // Column Family Name
+//					StringSerializer.get(),   // Key Serializer
+//					StringSerializer.get());  // Column Serializer
+//	
+//			try {
+//			
+//				new CassandraClusterConnection(false).getKeyspace().createColumnFamily(cf_UserNotificationsUnreadTimeline, ImmutableMap.<String, Object>builder()
+//						.put("default_validation_class", "UTF8Type")
+//						.put("key_validation_class",     "UTF8Type")
+//						.put("comparator_type",          "UTF8Type")
+//						.build());
+//				
+//			} catch (ConnectionException e) {
+//				e.printStackTrace();
+//			}
+//			System.out.println("UserNotificationsUnread END");
+//		}
 
 
 	//	private List<String> getKeys() {