ServiceComponentHost sch = cluster.getService(serviceName).getServiceComponent(componentName2).getServiceComponentHost(host1);
Assert.assertNotNull(sch);
sch.handleEvent(new ServiceComponentHostStartEvent(sch.getServiceComponentName(), sch.getHostName(), System.currentTimeMillis()));
sch.handleEvent(new ServiceComponentHostStartedEvent (sch.getServiceComponentName(), sch.getHostName(), System.currentTimeMillis()));
Set<ServiceComponentHostRequest> schRequests = new HashSet<ServiceComponentHostRequest>();
schRequests.add(new ServiceComponentHostRequest(clusterName, null, null, host1, null));
try {
controller.deleteHostComponents(schRequests);