/**
* 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.hadoop.hdfs;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.Map;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.tools.DFSck;
import org.apache.hadoop.hdfs.util.InjectionEvent;
import org.apache.hadoop.http.HttpServer;
import org.apache.hadoop.util.InjectionEventI;
import org.apache.hadoop.util.InjectionHandler;
import static org.junit.Assert.*;
import org.junit.Test;
public class TestHttpServerShutdown {
private static MiniDFSCluster cluster;
private static Configuration conf;
private static final Log LOG = LogFactory
.getLog(TestHttpServerShutdown.class);
private static Set<Thread> oldThreads;
private volatile boolean fsckCalled = false;
private class TestHandler extends InjectionHandler {
@Override
protected void _processEvent(InjectionEventI event, Object... args) {
if (event == InjectionEvent.NAMENODE_FSCK_START) {
fsckCalled = true;
while (true) {
try {
Thread.sleep(1000);
} catch (InterruptedException ie) {
}
}
}
}
}
private class FsckThread extends Thread {
public void run() {
try {
ByteArrayOutputStream os = new ByteArrayOutputStream();
PrintStream ps = new PrintStream(os);
new DFSck(conf, ps).run(new String[] { "/" });
} catch (Exception e) {
}
}
}
@Test(timeout = 180000)
public void testShutdown() throws Exception {
oldThreads = Thread.getAllStackTraces().keySet();
conf = new Configuration();
conf.setInt(HttpServer.HTTP_THREADPOOL_MAX_STOP_TIME, 3000);
cluster = new MiniDFSCluster(conf, 0, true, null);
InjectionHandler.set(new TestHandler());
Thread fsck = new FsckThread();
fsck.setDaemon(true);
fsck.start();
while (!fsckCalled) {
Thread.sleep(1000);
LOG.info("Waiting for fsck to hit NN");
}
cluster.shutdown();
LOG.info("Alive Non Daemon threads : ");
for (Map.Entry<Thread, StackTraceElement[]> entry : Thread
.getAllStackTraces().entrySet()) {
Thread t = entry.getKey();
if (!t.isDaemon() && !oldThreads.contains(t)) {
LOG.info("Thread : " + t.getName());
for (StackTraceElement e : entry.getValue()) {
LOG.info(e);
}
fail("Thread : " + t.getName() + " is not a daemon thread");
}
}
}
}