diff --git a/core/src/main/scala/org/apache/spark/network/ConnectionManager.scala b/core/src/main/scala/org/apache/spark/network/ConnectionManager.scala
index 3dd82bee0b5fd933890023e4b81bee28a08162fa..a7f20f8c51a5af995874f0e85106633955c24f1f 100644
--- a/core/src/main/scala/org/apache/spark/network/ConnectionManager.scala
+++ b/core/src/main/scala/org/apache/spark/network/ConnectionManager.scala
@@ -550,9 +550,6 @@ private[spark] class ConnectionManager(port: Int, conf: SparkConf) extends Loggi
 
       newConnection
     }
-    // I removed the lookupKey stuff as part of merge ... should I re-add it ? We did not find it
-    // useful in our test-env ... If we do re-add it, we should consistently use it everywhere I
-    // guess ?
     val connection = connectionsById.getOrElseUpdate(connectionManagerId, startNewConnection())
     message.senderAddress = id.toSocketAddress()
     logDebug("Sending [" + message + "] to [" + connectionManagerId + "]")