beanCollection.setAlerts(originAlert1, alertResultMap1, clusterName);
beanCollection.setAlerts(originAlert2, alertResultMap2, clusterName);
beanCollection.refreshAlertDelta(clusterName);
String summaryKey = ClusterAlertMBeanCollection.ALERT_SUMMARY + "_" + clusterName;
jmxMBeanObserver.refresh();
Assert.assertEquals(jmxMBeanObserver._beanValueMap.size(), nAlerts2 + nAlerts1 + 1);
Thread.sleep(300);