bugfix: change group and node offline status are not pushed in real time

changes/en-us/2.x.md

@@ -32,6 +32,7 @@ Add changes here for all PR submitted to the 2.x branch.
 - [[#6797](https://github.com/apache/incubator-seata/pull/6797)] fall back to any of available cluster address when query cluster address is empty
 - [[#6800](https://github.com/apache/incubator-seata/pull/6800)] make exception message generic for all database drivers
 - [[#6759](https://github.com/apache/incubator-seata/pull/6759)] fix the error of active refresh failure of cross-database table metadata
+- [[#6812](https://github.com/apache/incubator-seata/pull/6812)] bugfix: change group and node offline status are not pushed in real time
 
 
 ### optimize:

changes/zh-cn/2.x.md

@@ -32,6 +32,7 @@
 - [[#6781](https://github.com/apache/incubator-seata/pull/6781)] 修复tc下线时,由于定时任务没有先关闭,导致下线后还会被注册上,需要靠namingserver的健康检查来下线的bug
 - [[#6797](https://github.com/apache/incubator-seata/pull/6797)] 当查询的集群地址为空时，获取可用的任意集群地址
 - [[#6800](https://github.com/apache/incubator-seata/pull/6800)] 使异常消息对所有数据库驱动程序通用
+- - [[#6812](https://github.com/apache/incubator-seata/pull/6812)] 修复切换事务分组和节点下线时namingserver没有实时感知和推送的bug
 
 - [[#6759](https://github.com/apache/incubator-seata/pull/6759)] 修复跨库表主动刷新`tableMeta`的异常问题
 

discovery/seata-discovery-namingserver/src/main/java/org/apache/seata/discovery/registry/namingserver/NamingserverRegistryServiceImpl.java

@@ -362,7 +362,6 @@ public List<InetSocketAddress> refreshGroup(String vGroup) throws IOException {
                 throw new NamingRegistryException("cannot lookup server list in vgroup: " + vGroup);
             }
             String jsonResponse = EntityUtils.toString(response.getEntity(), "UTF-8");
-            response.close();
             // jsonResponse -> MetaResponse
             MetaResponse metaResponse = OBJECT_MAPPER.readValue(jsonResponse, new TypeReference<MetaResponse>() {
             });
@@ -375,6 +374,7 @@ public List<InetSocketAddress> refreshGroup(String vGroup) throws IOException {
                 term = metaResponse.getTerm();
             }
             VGROUP_ADDRESS_MAP.put(vGroup, newAddressList);
+            removeOfflineAddressesIfNecessary(vGroup,vGroup,newAddressList);
         } catch (IOException e) {
             LOGGER.error(e.getMessage());
             throw new RemoteException();

namingserver/src/main/java/org/apache/seata/namingserver/manager/NamingManager.java

@@ -224,9 +224,9 @@ public void notifyClusterChange(String vGroup, String namespace, String clusterN
 
         Optional.ofNullable(vGroupMap.asMap().get(vGroup)).flatMap(map -> Optional.ofNullable(map.get(namespace)).flatMap(namespaceBO -> Optional.ofNullable(namespaceBO.getCluster(clusterName)))).ifPresent(clusterBO -> {
             Set<String> units = clusterBO.getUnitNames();
-            if (StringUtils.isBlank(unitName) || units.contains(unitName)) {
-                applicationContext.publishEvent(new ClusterChangeEvent(this, vGroup, term));
-            }
+//            if (!CollectionUtils.isEmpty(units)) {
+            applicationContext.publishEvent(new ClusterChangeEvent(this, vGroup, term));
+//            }
         });
     }
 
@@ -276,7 +276,7 @@ public boolean unregisterInstance(String namespace, String clusterName, String u
                     if (vgroupMap instanceof Map) {
                         ((Map<String, Object>) vgroupMap).forEach((group, realUnitName) -> {
                             vGroupMap.get(group, k -> new ConcurrentHashMap<>())
-                                .get(namespace).getCluster(clusterName).remove(realUnitName == null ? unitName : (String) realUnitName);
+                                    .get(namespace).getCluster(clusterName).remove(realUnitName == null ? unitName : (String) realUnitName);
                             notifyClusterChange(group, namespace, clusterName, unitName, node.getTerm());
                         });
                     }
@@ -367,17 +367,23 @@ public Result<String> changeGroup(String namespace, String vGroup, String cluste
             namespaceClusters.put(currentNamespace,
                 new HashSet<>(namespaceMap.get(currentNamespace).getClusterMap().keySet()));
         }
-        createGroup(namespace, vGroup, clusterName, unitName);
+        Result<String> res = createGroup(namespace, vGroup, clusterName, unitName);
+        if (!res.isSuccess()) {
+            LOGGER.error("add vgroup failed!" + res.getMessage());
+            return res;
+        }
         AtomicReference<Result<String>> result = new AtomicReference<>();
         namespaceClusters.forEach((oldNamespace, clusters) -> {
             for (String cluster : clusters) {
                 Optional.ofNullable(namespaceClusterDataMap.get(oldNamespace))
                     .flatMap(map -> Optional.ofNullable(map.get(cluster))).ifPresent(clusterData -> {
-                        if (!CollectionUtils.isEmpty(clusterData.getUnitData())) {
-                            clusterData.getUnitData().forEach((unit, unitData) -> result
-                                .set(removeGroup(unitData, vGroup, cluster, oldNamespace, unitName)));
-                        }
-                    });
+                            if (!CollectionUtils.isEmpty(clusterData.getUnitData())) {
+                                clusterData.getUnitData().forEach((unit, unitData) -> {
+                                    result.set(removeGroup(unitData, vGroup, cluster, oldNamespace, unitName));
+                                    notifyClusterChange(vGroup, namespace, cluster, unit, -1);
+                                });
+                            }
+                        });
             }
         });
         return Optional.ofNullable(result.get()).orElseGet(() -> new Result<>("200", "change vGroup successfully!"));