--- a/src/main/java/alice/topology/manager/IncomingHosts.java	Sat Dec 30 20:33:06 2017 +0900
+++ b/src/main/java/alice/topology/manager/IncomingHosts.java	Sun Dec 31 01:08:52 2017 +0900
@@ -3,6 +3,7 @@
 import java.util.HashMap;
 import java.util.LinkedList;
 
+import org.apache.log4j.Logger;
 import org.msgpack.type.ValueFactory;
 
 import alice.codesegment.CodeSegment;
@@ -18,6 +19,7 @@
     private Receiver host = ids.create(CommandType.TAKE);      // new coming host info
     private Receiver absCookieTable = ids.create(CommandType.TAKE); // cookie, AbsName HashMap
     private Receiver cookie = ids.create(CommandType.TAKE);    // MD5
+    private Logger log = Logger.getLogger(IncomingHosts.class);
 
     public IncomingHosts() {
         this.topology.setKey("resultParse");
@@ -48,6 +50,7 @@
         ods.put(this.absCookieTable.key, absCookieTable);
 
         ods.put(nodeName, "cookie", cookie);
+        log.info( "toplology manager connected from " + nodeName);
 
         LinkedList<NodeInfo> nodes = topology.get(nodeName);
         for (NodeInfo nodeInfo : nodes) {