/**
* 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.server.datanode;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.MiniAvatarCluster;
import org.apache.hadoop.hdfs.protocol.FSConstants.DatanodeReportType;
import org.apache.hadoop.hdfs.server.common.IncorrectVersionException;
import org.apache.hadoop.hdfs.util.InjectionEvent;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.hadoop.util.InjectionEventI;
import org.apache.hadoop.util.InjectionHandler;
import static org.junit.Assert.*;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class TestAvatarDatanodeVersion {
private Configuration conf;
private MiniAvatarCluster cluster;
private static volatile boolean done = false;
@Before
public void setUp() throws Exception {
MiniAvatarCluster.createAndStartZooKeeper();
conf = new Configuration();
done = false;
cluster = new MiniAvatarCluster(conf, 0, true, null, null);
}
@After
public void tearDown() throws Exception {
cluster.shutDown();
MiniAvatarCluster.shutDownZooKeeper();
InjectionHandler.clear();
}
private static class TestHandler extends InjectionHandler {
private int service = 1;
TestHandler(int service) {
this.service = service;
}
@Override
protected void _processEventIO(InjectionEventI event, Object... args)
throws IOException {
if (service == 1 && event == InjectionEvent.AVATARDATANODE_BEFORE_START_OFFERSERVICE1) {
done = true;
throw new RemoteException(IncorrectVersionException.class.getName(),
"Unexpected data transfer protocol version");
}
if (service == 2 && event == InjectionEvent.AVATARDATANODE_BEFORE_START_OFFERSERVICE2) {
done = true;
throw new RemoteException(IncorrectVersionException.class.getName(),
"Unexpected data transfer protocol version");
}
}
}
private void waitForDone() { // wait for at most 30s
long start = System.currentTimeMillis();
while (System.currentTimeMillis() - start < 300000 && !done) {
// Wait for trigger.
System.out.println("Waiting for trigger");
DFSTestUtil.waitSecond();;
}
if (!done) {
fail("Event not triggered yet");
}
}
/** Test when standby registration throws IncorrectVersion */
@Test
public void testDatanodeVersionStandby() throws Exception {
InjectionHandler.set(new TestHandler(2));
cluster.startDataNodes(1, null, null, conf);
waitForDone();
int dnReports = cluster.getPrimaryAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
int dnStandbyReports = cluster.getStandbyAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
long start = System.currentTimeMillis();
while (System.currentTimeMillis() - start < 10000 && dnReports != 1) {
System.out.println("Waiting for dn report");
DFSTestUtil.waitSecond();
dnReports = cluster.getPrimaryAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
dnStandbyReports = cluster.getStandbyAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
}
assertEquals(1, dnReports);
assertEquals(0, dnStandbyReports);
assertEquals(1, cluster.getDataNodes().size());
assertTrue(cluster.getDataNodes().get(0).isDatanodeUp());
}
/* Test when primary registration throws IncorrectVersion */
@Test
public void testDatanodeVersionPrimary() throws Exception {
InjectionHandler.set(new TestHandler(1));
cluster.startDataNodes(1, null, null, conf);
waitForDone();
int dnReports = cluster.getPrimaryAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
int dnStandbyReports = cluster.getStandbyAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
long start = System.currentTimeMillis();
while (System.currentTimeMillis() - start < 10000) {
System.out.println("Waiting for dn report");
DFSTestUtil.waitSecond();;
dnReports = cluster.getPrimaryAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
dnStandbyReports = cluster.getStandbyAvatar(0).avatar
.getDatanodeReport(DatanodeReportType.LIVE).length;
}
assertEquals(0, dnReports);
assertEquals(1, dnStandbyReports);
assertEquals(1, cluster.getDataNodes().size());
assertFalse(cluster.getDataNodes().get(0).isDatanodeUp());
}
}