When the alert is executed, if the alarm group is not bound to the alert plug-in, the alert status is updated to fail.

dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/runner/AlertSender.java

@@ -75,7 +75,8 @@ public class AlertSender {
             List<AlertPluginInstance> alertInstanceList = alertDao.listInstanceByAlertGroupId(alertGroupId);
             if (CollectionUtils.isEmpty(alertInstanceList)) {
                 logger.error("send alert msg fail,no bind plugin instance.");
-                return;
+                alertDao.updateAlert(AlertStatus.EXECUTION_FAILURE, "no bind plugin instance", alert.getId());
+                continue;
             }
             AlertData alertData = new AlertData();
             alertData.setId(alert.getId())

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/AlertPluginInstanceServiceImpl.java

@@ -223,7 +223,7 @@ public class AlertPluginInstanceServiceImpl extends BaseService implements Alert
         if (CollectionUtils.isEmpty(idsList)) {
             return false;
         }
-        Optional<String> first = idsList.stream().filter(k -> Arrays.asList(k.split(",")).contains(id)).findFirst();
+        Optional<String> first = idsList.stream().filter(k -> null != k && Arrays.asList(k.split(",")).contains(id)).findFirst();
         return first.isPresent();
     }