adding missing interface IClusterLifecycleListener
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/application/IClusterLifecycleListener.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/application/IClusterLifecycleListener.java
new file mode 100644
index 0000000..51db13e
--- /dev/null
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/application/IClusterLifecycleListener.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.hyracks.api.application;
+
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * A listener interface for providing notification call backs to events such as a Node Controller joining/leaving the cluster.
+ */
+public interface IClusterLifecycleListener {
+
+ /**
+ * @param nodeId
+ * A unique identifier of a Node Controller
+ * @param ncConfig
+ * A map containing the set of configuration parameters that were used to start the Node Controller
+ */
+ public void notifyNodeJoin(String nodeId, Map<String, String> ncConfiguration);
+
+ /**
+ * @param deadNodeIds
+ * A set of Node Controller Ids that have left the cluster. The set is not cumulative.
+ */
+ public void notifyNodeFailure(Set<String> deadNodeIds);
+
+}