diff --git a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/RegisterNodeWork.java b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/RegisterNodeWork.java
index 7ac0641..dd26ea4 100644
--- a/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/RegisterNodeWork.java
+++ b/hyracks/hyracks-control/hyracks-control-cc/src/main/java/org/apache/hyracks/control/cc/work/RegisterNodeWork.java
@@ -72,7 +72,7 @@
             }
             ncConfiguration = new HashMap<String, String>();
             state.getNCConfig().toMap(ncConfiguration);
-            Set<String> nodes = ipAddressNodeNameMap.get(ipAddress);
+            Set<String> nodes = ipAddressNodeNameMap.get(InetAddress.getByName(ipAddress));
             if (nodes == null) {
                 nodes = new HashSet<String>();
                 ipAddressNodeNameMap.put(InetAddress.getByName(ipAddress), nodes);