[GitHub] [zookeeper] polaris-alioth commented on a diff in pull request #1864: fix: Thread leaks occur when dns fails.

[GitBox <gi...@apache.org>]

polaris-alioth commented on code in PR #1864:
URL: https://github.com/apache/zookeeper/pull/1864#discussion_r857078115


##########
zookeeper-server/src/test/java/org/apache/zookeeper/ClientCloseTest.java:
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@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.zookeeper;
+
+import org.apache.zookeeper.client.ZKClientConfig;
+import org.apache.zookeeper.server.ServerCnxnFactory;
+import org.apache.zookeeper.server.ZooKeeperThread;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.lang.reflect.Field;
+
+import static org.junit.Assert.assertEquals;
+
+public class ClientCloseTest extends ZKTestCase {
+
+    @BeforeClass
+    public static void setupClass() {
+        System.setProperty(ServerCnxnFactory.ZOOKEEPER_SERVER_CNXN_FACTORY, "org.apache.zookeeper.server.NettyServerCnxnFactory");
+        System.setProperty(ZKClientConfig.ZOOKEEPER_CLIENT_CNXN_SOCKET, "org.apache.zookeeper.ClientCnxnSocketNetty");
+    }
+
+    @Test
+    public void testClientClose() {
+        ZooKeeperThread sendThread = null;
+        ZooKeeperThread eventThread = null;
+        try {

Review Comment:
   I agree with you. It's a good way for the UT.



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