/**
* Copyright The Apache Software Foundation
*
* 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 com.alibaba.wasp.master;
import com.alibaba.wasp.ClusterStatus;
import com.alibaba.wasp.MiniWaspCluster;
import com.alibaba.wasp.WaspTestingUtility;
import com.alibaba.wasp.conf.WaspConfiguration;
import com.alibaba.wasp.util.JVMClusterUtil.MasterThread;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.junit.Test;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
public class TestMasterShutdown {
private static final Log LOG = LogFactory.getLog(TestMasterShutdown.class);
private Configuration conf = WaspConfiguration.create();
/**
* Simple test of shutdown.
* <p>
* Starts with three masters. Tells the active master to shutdown the cluster.
* Verifies that all masters are properly shutdown.
* @throws Exception
*/
@Test(timeout = 240000)
public void testMasterShutdown() throws Exception {
final int NUM_MASTERS = 3;
final int NUM_RS = 3;
// Start the cluster
WaspTestingUtility TEST_UTIL = new WaspTestingUtility(conf);
TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
MiniWaspCluster cluster = TEST_UTIL.getWaspCluster();
// get all the master threads
List<MasterThread> masterThreads = cluster.getMasterThreads();
// wait for each to come online
for (MasterThread mt : masterThreads) {
assertTrue(mt.isAlive());
}
// find the active master
FMaster active = null;
for (int i = 0; i < masterThreads.size(); i++) {
if (masterThreads.get(i).getMaster().isActiveMaster()) {
active = masterThreads.get(i).getMaster();
break;
}
}
assertNotNull(active);
// make sure the other two are backup masters
ClusterStatus status = active.getClusterStatus();
assertEquals(2, status.getBackupMastersSize());
assertEquals(2, status.getBackupMasters().size());
// tell the active master to shutdown the cluster
active.shutdown();
for (int i = NUM_MASTERS - 1; i >= 0; --i) {
cluster.waitOnMaster(i);
}
// make sure all the masters properly shutdown
assertEquals(0, masterThreads.size());
TEST_UTIL.shutdownMiniCluster();
}
}