/**
* 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 org.apache.hadoop.hbase.master;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.ClusterStatus;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.LargeTests;
import org.apache.hadoop.hbase.LocalHBaseCluster;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.util.JVMClusterUtil.MasterThread;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(LargeTests.class)
public class TestMasterShutdown {
/**
* 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;
// Create config to use for this cluster
Configuration conf = HBaseConfiguration.create();
// Start the cluster
HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(conf);
TEST_UTIL.startMiniCluster(NUM_MASTERS, NUM_RS);
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
// 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
HMaster 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();
}
@Test(timeout = 180000)
public void testMasterShutdownBeforeStartingAnyRegionServer() throws Exception {
final int NUM_MASTERS = 1;
final int NUM_RS = 0;
// Create config to use for this cluster
Configuration conf = HBaseConfiguration.create();
conf.setInt("hbase.ipc.client.failed.servers.expiry", 200);
conf.setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, 1);
// Start the cluster
final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(conf);
TEST_UTIL.startMiniDFSCluster(3);
TEST_UTIL.startMiniZKCluster();
TEST_UTIL.createRootDir();
final LocalHBaseCluster cluster =
new LocalHBaseCluster(conf, NUM_MASTERS, NUM_RS, HMaster.class,
MiniHBaseCluster.MiniHBaseClusterRegionServer.class);
final MasterThread master = cluster.getMasters().get(0);
master.start();
Thread shutdownThread = new Thread() {
public void run() {
try {
TEST_UTIL.getHBaseAdmin().shutdown();
cluster.waitOnMaster(0);
} catch (Exception e) {
}
};
};
shutdownThread.start();
master.join();
shutdownThread.join();
List<MasterThread> masterThreads = cluster.getMasters();
// make sure all the masters properly shutdown
assertEquals(0, masterThreads.size());
TEST_UTIL.shutdownMiniZKCluster();
TEST_UTIL.shutdownMiniDFSCluster();
TEST_UTIL.cleanupTestDir();
}
}