diff --git a/dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/runner/AlertSender.java b/dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/runner/AlertSender.java
index 933b8855f9..429c744bea 100644
--- a/dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/runner/AlertSender.java
+++ b/dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/runner/AlertSender.java
@@ -107,8 +107,8 @@ public class AlertSender {
 
         List<AlertPluginInstance> alertInstanceList = alertDao.listInstanceByAlertGroupId(alertGroupId);
         AlertData alertData = new AlertData();
-        alertData.setContent(title)
-                .setTitle(content);
+        alertData.setContent(content)
+            .setTitle(title);
 
         boolean sendResponseStatus = true;
         List<AlertSendResponseResult> sendResponseResults = new ArrayList<>();
diff --git a/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java b/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java
index bcc082846b..1f138f6acd 100644
--- a/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java
+++ b/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java
@@ -103,11 +103,14 @@ public class WorkerServer {
     public void run() {
         logger.info("start worker server...");
 
+        //alert-server client registry
+        alertClientService = new AlertClientService(workerConfig.getAlertListenHost(),Constants.ALERT_RPC_PORT);
+
         //init remoting server
         NettyServerConfig serverConfig = new NettyServerConfig();
         serverConfig.setListenPort(workerConfig.getListenPort());
         this.nettyRemotingServer = new NettyRemotingServer(serverConfig);
-        this.nettyRemotingServer.registerProcessor(CommandType.TASK_EXECUTE_REQUEST, new TaskExecuteProcessor());
+        this.nettyRemotingServer.registerProcessor(CommandType.TASK_EXECUTE_REQUEST, new TaskExecuteProcessor(alertClientService));
         this.nettyRemotingServer.registerProcessor(CommandType.TASK_KILL_REQUEST, new TaskKillProcessor());
         this.nettyRemotingServer.registerProcessor(CommandType.DB_TASK_ACK, new DBTaskAckProcessor());
         this.nettyRemotingServer.registerProcessor(CommandType.DB_TASK_RESPONSE, new DBTaskResponseProcessor());
@@ -116,9 +119,6 @@ public class WorkerServer {
         // worker registry
         this.workerRegistry.registry();
 
-        //alert-server client registry
-        alertClientService = new AlertClientService(workerConfig.getAlertListenHost(),Constants.ALERT_RPC_PORT);
-
         // retry report task status
         this.retryReportTaskStatusThread.start();
 
diff --git a/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/dag.vue b/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/dag.vue
index a61d289d3d..c56d73f443 100755
--- a/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/dag.vue
+++ b/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/dag.vue
@@ -34,30 +34,30 @@
     <div class="dag-contect">
       <div class="dag-toolbar">
         <div class="assist-btn">
-          <el-button
-            style="vertical-align: middle;"
-            data-toggle="tooltip"
-            :title="$t('View variables')"
-            data-container="body"
-            type="primary"
-            size="mini"
-            :disabled="$route.name !== 'projects-instance-details'"
-            @click="_toggleView"
-            icon="el-icon-c-scale-to-original">
-          </el-button>
-          <span>
+          <el-tooltip :content="$t('View variables')" placement="top" :enterable="false">
+           <span>
             <el-button
               style="vertical-align: middle;"
-              data-toggle="tooltip"
-              :title="$t('Startup parameter')"
-              data-container="body"
               type="primary"
               size="mini"
               :disabled="$route.name !== 'projects-instance-details'"
-              @click="_toggleParam"
-              icon="el-icon-arrow-right">
+              @click="_toggleView"
+              icon="el-icon-c-scale-to-original">
             </el-button>
-          </span>
+           </span>
+          </el-tooltip>
+          <el-tooltip :content="$t('Startup parameter')" placement="top" :enterable="false">
+            <span>
+              <el-button
+                style="vertical-align: middle;"
+                type="primary"
+                size="mini"
+                :disabled="$route.name !== 'projects-instance-details'"
+                @click="_toggleParam"
+                icon="el-icon-arrow-right">
+              </el-button>
+            </span>
+          </el-tooltip>
           <span class="name">{{name}}</span>
           &nbsp;
           <span v-if="name"  class="copy-name" @click="_copyName" :data-clipboard-text="name"><em class="el-icon-copy-document" data-container="body"  data-toggle="tooltip" :title="$t('Copy name')" ></em></span>
@@ -70,32 +70,36 @@
                :id="item.code"
                :key="$index"
                @click="_ckOperation(item,$event)">
-              <el-button type="text" class="operBtn" data-container="body" :icon="item.icon" v-tooltip.light="item.desc"></el-button>
+              <el-tooltip :content="item.desc" placement="top" :enterable="false">
+                <span><el-button type="text" class="operBtn" :icon="item.icon"></el-button></span>
+              </el-tooltip>
             </a>
           </div>
-          <el-button
-            type="primary"
-            v-tooltip.light="$t('Format DAG')"
-            icon="el-icon-caret-right"
-            size="mini"
-            data-container="body"
-            v-if="(type === 'instance' || 'definition') && urlParam.id !=undefined"
-            style="vertical-align: middle;"
-            @click="dagAutomaticLayout">
-          </el-button>
-          <span>
-            <el-button
-              v-tooltip.light="$t('Refresh DAG status')"
-              data-container="body"
-              style="vertical-align: middle;"
-              icon="el-icon-refresh"
-              type="primary"
-              :loading="isRefresh"
-              v-if="type === 'instance'"
-              @click="!isRefresh && _refresh()"
-              size="mini" >
-            </el-button>
-          </span>
+          <el-tooltip :content="$t('Format DAG')" placement="top" :enterable="false">
+            <span>
+              <el-button
+                type="primary"
+                icon="el-icon-caret-right"
+                size="mini"
+                v-if="(type === 'instance' || 'definition') && urlParam.id !=undefined"
+                style="vertical-align: middle;"
+                @click="dagAutomaticLayout">
+              </el-button>
+            </span>
+          </el-tooltip>
+          <el-tooltip :content="$t('Refresh DAG status')" placement="top" :enterable="false">
+            <span>
+              <el-button
+                style="vertical-align: middle;"
+                icon="el-icon-refresh"
+                type="primary"
+                :loading="isRefresh"
+                v-if="type === 'instance'"
+                @click="!isRefresh && _refresh()"
+                size="mini" >
+              </el-button>
+            </span>
+          </el-tooltip>
           <el-button
                   v-if="isRtTasks"
                   style="vertical-align: middle;"
@@ -108,10 +112,8 @@
           <span>
             <el-button
               type="primary"
-              v-tooltip.light="$t('Close')"
               icon="el-icon-switch-button"
               size="mini"
-              data-container="body"
               v-if="(type === 'instance' || 'definition') "
               style="vertical-align: middle;"
               @click="_closeDAG">
diff --git a/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/plugIn/jsPlumbHandle.js b/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/plugIn/jsPlumbHandle.js
index 0037af68b6..1977a92409 100755
--- a/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/plugIn/jsPlumbHandle.js
+++ b/dolphinscheduler-ui/src/js/conf/home/pages/dag/_source/plugIn/jsPlumbHandle.js
@@ -627,6 +627,7 @@ JSP.prototype.saveStore = function () {
         tasks.push(tasksParam)
       }
     })
+
     if (store.state.dag.connects.length === this.JspInstance.getConnections().length) {
       _.map(store.state.dag.connects, u => {
         connects.push({
@@ -658,6 +659,14 @@ JSP.prototype.saveStore = function () {
           label: v._jsPlumb.overlays.label.canvas.innerText
         })
       })
+    } else if (store.state.dag.connects.length > this.JspInstance.getConnections().length) {
+      _.map(this.JspInstance.getConnections(), v => {
+        connects.push({
+          endPointSourceId: v.sourceId,
+          endPointTargetId: v.targetId,
+          label: v._jsPlumb.overlays.label.canvas.innerText
+        })
+      })
     }
 
     _.map(tasksAll(), v => {