added index on _key

src/database/mongo.js

@@ -26,8 +26,12 @@
 			});
 
 
-			db.createCollection('objects', function(err, _collection) {
+			db.createCollection('objects', function(err, collection) {
-
+				collection.ensureIndex({_key :1}, {background:true}, function(err, name){
+					if(err) {
+						winston.error("Error creating index " + err.message);
+					}
+				});
 			});
 
 			callback(err);

src/routes/debug.js

@@ -350,7 +350,7 @@ var	DebugRoute = function(app) {
 				isMemberOfSets
 			];
 
-			require('async').series(objectTasks, function(err, results) {
+			require('async').series(setTasks, function(err, results) {
 				if(err) {
 					console.log(err);
 					res.send(err.message);