/**
* 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.test;
import java.net.InetSocketAddress;
import org.apache.zookeeper.PortAssignment;
import org.apache.zookeeper.ZKTestCase;
import org.apache.zookeeper.server.NIOServerCnxnFactory;
import org.apache.zookeeper.server.util.OSMXBean;
import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* ZOOKEEPER-1620 - Acceptor and Selector thread don't call selector.close()
* causing fd leakage
*/
public class NIOConnectionFactoryFdLeakTest extends ZKTestCase {
private static final Logger LOG = LoggerFactory
.getLogger(NIOConnectionFactoryFdLeakTest.class);
@Test
public void testFileDescriptorLeak() throws Exception {
OSMXBean osMbean = new OSMXBean();
if (osMbean.getUnix() != true) {
LOG.info("Unable to run test on non-unix system");
return;
}
long startFdCount = osMbean.getOpenFileDescriptorCount();
LOG.info("Start fdcount is: " + startFdCount);
for (int i = 0; i < 50; ++i) {
NIOServerCnxnFactory factory = new NIOServerCnxnFactory();
factory.configure(
new InetSocketAddress(
"127.0.0.1", PortAssignment.unique()), 10);
factory.start();
Thread.sleep(100);
factory.shutdown();
}
long endFdCount = osMbean.getOpenFileDescriptorCount();
LOG.info("End fdcount is: " + endFdCount);
// On my box, if selector.close() is not called fd diff is > 700.
Assert.assertTrue("Possible fd leakage",
((endFdCount - startFdCount) < 50));
}
}