[GitHub] [zookeeper] eolivelli commented on a change in pull request #1235: ZOOKEEPER-3706: ZooKeeper.close() would leak SendThread when the netw…

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

eolivelli commented on a change in pull request #1235: ZOOKEEPER-3706: ZooKeeper.close() would leak SendThread when the netw…
URL: https://github.com/apache/zookeeper/pull/1235#discussion_r385525037
 
 

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 File path: zookeeper-server/src/test/java/org/apache/zookeeper/ClientCnxnSocketFragilityTest.java
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+/*
+ * 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 java.io.IOException;
+import java.net.InetSocketAddress;
+import java.util.Queue;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import org.apache.zookeeper.ClientCnxn.Packet;
+import org.apache.zookeeper.Watcher.Event.KeeperState;
+import org.apache.zookeeper.ZooDefs.Ids;
+import org.apache.zookeeper.client.HostProvider;
+import org.apache.zookeeper.client.ZKClientConfig;
+import org.apache.zookeeper.data.Stat;
+import org.apache.zookeeper.server.quorum.QuorumPeerTestBase;
+import org.apache.zookeeper.test.ClientBase;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ClientCnxnSocketFragilityTest extends QuorumPeerTestBase {
+
+    private static final int SERVER_COUNT = 3;
+
+    private static final int SESSION_TIMEOUT = 40000;
+
+    public static final int CONNECTION_TIMEOUT = 30000;
+
+    private final UnsafeCoordinator unsafeCoordinator = new UnsafeCoordinator();
+
+    private volatile CustomZooKeeper zk = null;
+
+    private volatile FragileClientCnxnSocketNIO socket = null;
+
+    private volatile CustomClientCnxn cnxn = null;
+
+    private String getCxnString(int[] clientPorts) {
+        StringBuffer hostPortBuffer = new StringBuffer();
+        for (int i = 0; i < clientPorts.length; i++) {
+            hostPortBuffer.append("127.0.0.1:");
+            hostPortBuffer.append(clientPorts[i]);
+            if (i != (clientPorts.length - 1)) {
+                hostPortBuffer.append(',');
+            }
+        }
+        return hostPortBuffer.toString();
+    }
+
+    private void closeZookeeper(ZooKeeper zk) {
+        Executors.newSingleThreadExecutor().submit(() -> {
+            try {
+                LOG.info("closeZookeeper is fired");
+                zk.close();
+            } catch (InterruptedException e) {
+            }
+        });
+    }
+
+    private void getDataBackgroundRetryForever(CustomZooKeeper zk, String path) {
+        new Thread(() -> {
+            for (;;) {
+                try {
+                    zk.getData(path, false, new Stat());
+                } catch (Exception e) {
 
 Review comment:
   Please log something, without the stacktrace

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