Index: hadoop4win-setup/my_packages/hadoop/bin/start-hadoop
===================================================================
--- hadoop4win-setup/my_packages/hadoop/bin/start-hadoop	(revision 140)
+++ hadoop4win-setup/my_packages/hadoop/bin/start-hadoop	(revision 232)
@@ -1,5 +1,15 @@
 #!/bin/bash
-cygstart --showminnoactive /bin/bash -c /bin/start-hadoop-daemon
-for ((i=1;i<=10;i++)); do sleep 1; printf "."; done
-printf "\n"
-jps
+if [ -z "$(jps | grep NameNode)" ]; then
+	cygstart --showminnoactive /bin/bash -c /bin/start-hadoop-daemon
+	for ((i=1;i<=10;i++)); do sleep 1; printf "."; done
+	printf "\n"
+	jps
+else
+	echo "Hadoop had already started!!"
+	jps
+fi
+
+echo "==============================================="
+echo " check http://localhost:50030 for Job Status.  "
+echo " check http://localhost:50070 for HDFS status. "
+echo "==============================================="