Hi, $subject,
I'm running sample, https://github.com/rekathiru/grouping-samples/tree/master/dependency_scaling/sample_groups Error is, [2015-01-07 13:39:58,094] ERROR {org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver} - Exception occurred while trying to invoke service method addApplication java.lang.NullPointerException at org.apache.stratos.autoscaler.applications.parser.DefaultApplicationParser.parseLeafLevelSubscriptions(DefaultApplicationParser.java:347) at org.apache.stratos.autoscaler.applications.parser.DefaultApplicationParser.parseGroup(DefaultApplicationParser.java:511) at org.apache.stratos.autoscaler.applications.parser.DefaultApplicationParser.parseGroups(DefaultApplicationParser.java:415) at org.apache.stratos.autoscaler.applications.parser.DefaultApplicationParser.buildCompositeAppStructure(DefaultApplicationParser.java:198) at org.apache.stratos.autoscaler.applications.parser.DefaultApplicationParser.parse(DefaultApplicationParser.java:107) at org.apache.stratos.autoscaler.services.impl.AutoScalerServiceImpl.addApplication(AutoScalerServiceImpl.java:176) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212) at org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver.invokeBusinessLogic(RPCInOnlyMessageReceiver.java:66) at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110) at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172) at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146) at org.wso2.carbon.core.transports.CarbonServlet.doPost(CarbonServlet.java:231) at javax.servlet.http.HttpServlet.service(HttpServlet.java:755) at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61) at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128) at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68) -- -- Lahiru Sandaruwan Committer and PMC member, Apache Stratos, Senior Software Engineer, WSO2 Inc., http://wso2.com lean.enterprise.middleware email: lahi...@wso2.com blog: http://lahiruwrites.blogspot.com/ linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146