/*
* 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 java.util.Random;
import org.apache.commons.logging.impl.Log4JLogger;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fi.DataTransferTestUtil;
import org.apache.hadoop.fi.FiTestUtil;
import org.apache.hadoop.fi.DataTransferTestUtil.CountdownDoosAction;
import org.apache.hadoop.fi.DataTransferTestUtil.CountdownOomAction;
import org.apache.hadoop.fi.DataTransferTestUtil.CountdownSleepAction;
import org.apache.hadoop.fi.DataTransferTestUtil.DataTransferTest;
import org.apache.hadoop.fi.DataTransferTestUtil.SleepAction;
import org.apache.hadoop.fi.DataTransferTestUtil.VerificationAction;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DFSClient;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.server.datanode.BlockReceiver;
import org.apache.log4j.Level;
import org.junit.Assert;
import org.junit.Test;
/** Test DataTransferProtocol with fault injection. */
public class TestFiDataTransferProtocol2 {
static final short REPLICATION = 3;
static final long BLOCKSIZE = 1L * (1L << 20);
static final int PACKET_SIZE = 1024;
static final int MIN_N_PACKET = 3;
static final int MAX_N_PACKET = 10;
static final Configuration conf = new Configuration();
static {
conf.setInt("dfs.datanode.handler.count", 1);
conf.setInt("dfs.replication", REPLICATION);
conf.setInt(DFSConfigKeys.DFS_CLIENT_WRITE_PACKET_SIZE_KEY, PACKET_SIZE);
conf.setInt("dfs.socket.timeout", 5000);
}
static final byte[] bytes = new byte[MAX_N_PACKET * PACKET_SIZE];
static final byte[] toRead = new byte[MAX_N_PACKET * PACKET_SIZE];
static private FSDataOutputStream createFile(FileSystem fs, Path p
) throws IOException {
return fs.create(p, true, fs.getConf().getInt("io.file.buffer.size", 4096),
REPLICATION, BLOCKSIZE);
}
{
((Log4JLogger) BlockReceiver.LOG).getLogger().setLevel(Level.ALL);
((Log4JLogger) DFSClient.LOG).getLogger().setLevel(Level.ALL);
}
/**
* 1. create files with dfs
* 2. write MIN_N_PACKET to MAX_N_PACKET packets
* 3. close file
* 4. open the same file
* 5. read the bytes and compare results
*/
private static void writeSeveralPackets(String methodName) throws IOException {
final Random r = FiTestUtil.RANDOM.get();
final int nPackets = FiTestUtil.nextRandomInt(MIN_N_PACKET, MAX_N_PACKET + 1);
final int lastPacketSize = FiTestUtil.nextRandomInt(1, PACKET_SIZE + 1);
final int size = (nPackets - 1)*PACKET_SIZE + lastPacketSize;
FiTestUtil.LOG.info("size=" + size + ", nPackets=" + nPackets
+ ", lastPacketSize=" + lastPacketSize);
final MiniDFSCluster cluster = new MiniDFSCluster(conf, REPLICATION, true, null);
final FileSystem dfs = cluster.getFileSystem();
try {
final Path p = new Path("/" + methodName + "/foo");
final FSDataOutputStream out = createFile(dfs, p);
final long seed = r.nextLong();
final Random ran = new Random(seed);
ran.nextBytes(bytes);
out.write(bytes, 0, size);
out.close();
final FSDataInputStream in = dfs.open(p);
int totalRead = 0;
int nRead = 0;
while ((nRead = in.read(toRead, totalRead, size - totalRead)) > 0) {
totalRead += nRead;
}
Assert.assertEquals("Cannot read file.", size, totalRead);
for (int i = 0; i < size; i++) {
Assert.assertTrue("File content differ.", bytes[i] == toRead[i]);
}
}
finally {
dfs.close();
cluster.shutdown();
}
}
private static void initSlowDatanodeTest(DataTransferTest t, SleepAction a)
throws IOException {
t.fiCallReceivePacket.set(a);
t.fiReceiverOpWriteBlock.set(a);
t.fiStatusRead.set(a);
}
private void runTest17_19(String methodName, int dnIndex)
throws IOException {
FiTestUtil.LOG.info("Running " + methodName + " ...");
final int maxSleep = 3000;
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
initSlowDatanodeTest(t, new SleepAction(methodName, 0, 0, maxSleep));
initSlowDatanodeTest(t, new SleepAction(methodName, 1, 0, maxSleep));
initSlowDatanodeTest(t, new SleepAction(methodName, 2, 0, maxSleep));
t.fiCallWritePacketToDisk.set(new CountdownDoosAction(methodName, dnIndex, 3));
t.fiPipelineErrorAfterInit.set(new VerificationAction(methodName, dnIndex));
writeSeveralPackets(methodName);
Assert.assertTrue(t.isSuccess());
}
private void runTest29_30(String methodName, int dnIndex) throws IOException {
FiTestUtil.LOG.info("Running " + methodName + " ...");
final int maxSleep = 3000;
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
initSlowDatanodeTest(t, new SleepAction(methodName, 0, 0, maxSleep));
initSlowDatanodeTest(t, new SleepAction(methodName, 1, 0, maxSleep));
initSlowDatanodeTest(t, new SleepAction(methodName, 2, 0, maxSleep));
t.fiAfterDownstreamStatusRead.set(new CountdownOomAction(methodName, dnIndex, 3));
t.fiPipelineErrorAfterInit.set(new VerificationAction(methodName, dnIndex));
writeSeveralPackets(methodName);
Assert.assertTrue(t.isSuccess());
}
private void runTest34_35(String methodName, int dnIndex) throws IOException {
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
t.fiAfterDownstreamStatusRead.set(new CountdownSleepAction(methodName, dnIndex, 0, 3));
t.fiPipelineErrorAfterInit.set(new VerificationAction(methodName, dnIndex));
writeSeveralPackets(methodName);
Assert.assertTrue(t.isSuccess());
}
/**
* Streaming:
* Randomize datanode speed, write several packets,
* DN0 throws a DiskOutOfSpaceError when it writes the third packet to disk.
* Client gets an IOException and determines DN0 bad.
*/
@Test
public void pipeline_Fi_17() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runTest17_19(methodName, 0);
}
/**
* Streaming:
* Randomize datanode speed, write several packets,
* DN1 throws a DiskOutOfSpaceError when it writes the third packet to disk.
* Client gets an IOException and determines DN1 bad.
*/
@Test
public void pipeline_Fi_18() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runTest17_19(methodName, 1);
}
/**
* Streaming:
* Randomize datanode speed, write several packets,
* DN2 throws a DiskOutOfSpaceError when it writes the third packet to disk.
* Client gets an IOException and determines DN2 bad.
*/
@Test
public void pipeline_Fi_19() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runTest17_19(methodName, 2);
}
/**
* Streaming: Client writes several packets with DN0 very slow. Client
* finishes write successfully.
*/
@Test
public void pipeline_Fi_20() throws IOException {
final String methodName = FiTestUtil.getMethodName();
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
initSlowDatanodeTest(t, new SleepAction(methodName, 0, 3000));
writeSeveralPackets(methodName);
}
/**
* Streaming: Client writes several packets with DN1 very slow. Client
* finishes write successfully.
*/
@Test
public void pipeline_Fi_21() throws IOException {
final String methodName = FiTestUtil.getMethodName();
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
initSlowDatanodeTest(t, new SleepAction(methodName, 1, 3000));
writeSeveralPackets(methodName);
}
/**
* Streaming: Client writes several packets with DN2 very slow. Client
* finishes write successfully.
*/
@Test
public void pipeline_Fi_22() throws IOException {
final String methodName = FiTestUtil.getMethodName();
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
initSlowDatanodeTest(t, new SleepAction(methodName, 2, 3000));
writeSeveralPackets(methodName);
}
/**
* Streaming: Randomize datanode speed, write several packets, DN1 throws a
* OutOfMemoryException when it receives the ack of the third packet from DN2.
* Client gets an IOException and determines DN1 bad.
*/
@Test
public void pipeline_Fi_29() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runTest29_30(methodName, 1);
}
/**
* Streaming: Randomize datanode speed, write several packets, DN0 throws a
* OutOfMemoryException when it receives the ack of the third packet from DN1.
* Client gets an IOException and determines DN0 bad.
*/
@Test
public void pipeline_Fi_30() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runTest29_30(methodName, 0);
}
/**
* Streaming: Write several packets, DN1 never responses when it receives the
* ack of the third packet from DN2. Client gets an IOException and determines
* DN1 bad.
*/
@Test
public void pipeline_Fi_34() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runTest34_35(methodName, 1);
}
/**
* Streaming: Write several packets, DN0 never responses when it receives the
* ack of the third packet from DN1. Client gets an IOException and determines
* DN0 bad.
*/
@Test
public void pipeline_Fi_35() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runTest34_35(methodName, 0);
}
}