/*
* 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.commons.logging.impl.Log4JLogger;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fi.DataTransferTestUtil;
import org.apache.hadoop.fi.DataTransferTestUtil.DataTransferTest;
import org.apache.hadoop.fi.DataTransferTestUtil.DoosAction;
import org.apache.hadoop.fi.DataTransferTestUtil.OomAction;
import org.apache.hadoop.fi.DataTransferTestUtil.SleepAction;
import org.apache.hadoop.fi.DataTransferTestUtil.VerificationAction;
import org.apache.hadoop.fi.FiTestUtil;
import org.apache.hadoop.fi.FiTestUtil.Action;
import org.apache.hadoop.fs.CommonConfigurationKeys;
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.DFSConfigKeys;
import org.apache.hadoop.hdfs.HdfsConfiguration;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtocol;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.log4j.Level;
import org.junit.Assert;
import org.junit.Test;
/** Test DataTransferProtocol with fault injection. */
public class TestFiDataTransferProtocol {
static final short REPLICATION = 3;
static final long BLOCKSIZE = 1L * (1L << 20);
static final Configuration conf = new HdfsConfiguration();
static {
conf.setInt(DFSConfigKeys.DFS_DATANODE_HANDLER_COUNT_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_REPLICATION_KEY, REPLICATION);
conf.setInt(DFSConfigKeys.DFS_CLIENT_SOCKET_TIMEOUT_KEY, 5000);
}
static private FSDataOutputStream createFile(FileSystem fs, Path p
) throws IOException {
return fs.create(p, true,
fs.getConf().getInt(CommonConfigurationKeys.IO_FILE_BUFFER_SIZE_KEY,
4096), REPLICATION, BLOCKSIZE);
}
{
((Log4JLogger)DataTransferProtocol.LOG).getLogger().setLevel(Level.ALL);
}
/**
* 1. create files with dfs
* 2. write 1 byte
* 3. close file
* 4. open the same file
* 5. read the 1 byte and compare results
*/
static void write1byte(String methodName) throws IOException {
final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf
).numDataNodes(REPLICATION + 1).build();
final FileSystem dfs = cluster.getFileSystem();
try {
final Path p = new Path("/" + methodName + "/foo");
final FSDataOutputStream out = createFile(dfs, p);
out.write(1);
out.close();
final FSDataInputStream in = dfs.open(p);
final int b = in.read();
in.close();
Assert.assertEquals(1, b);
}
finally {
dfs.close();
cluster.shutdown();
}
}
private static void runSlowDatanodeTest(String methodName, SleepAction a
) throws IOException {
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest)DataTransferTestUtil.initTest();
t.fiCallReceivePacket.set(a);
t.fiReceiverOpWriteBlock.set(a);
t.fiStatusRead.set(a);
write1byte(methodName);
}
private static void runReceiverOpWriteBlockTest(String methodName,
int errorIndex, Action<DatanodeID, IOException> a) throws IOException {
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
t.fiReceiverOpWriteBlock.set(a);
t.fiPipelineInitErrorNonAppend.set(new VerificationAction(methodName,
errorIndex));
write1byte(methodName);
Assert.assertTrue(t.isSuccess());
}
private static void runStatusReadTest(String methodName, int errorIndex,
Action<DatanodeID, IOException> a) throws IOException {
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest) DataTransferTestUtil
.initTest();
t.fiStatusRead.set(a);
t.fiPipelineInitErrorNonAppend.set(new VerificationAction(methodName,
errorIndex));
write1byte(methodName);
Assert.assertTrue(t.isSuccess());
}
private static void runCallWritePacketToDisk(String methodName,
int errorIndex, Action<DatanodeID, IOException> a) throws IOException {
FiTestUtil.LOG.info("Running " + methodName + " ...");
final DataTransferTest t = (DataTransferTest)DataTransferTestUtil.initTest();
t.fiCallWritePacketToDisk.set(a);
t.fiPipelineErrorAfterInit.set(new VerificationAction(methodName, errorIndex));
write1byte(methodName);
Assert.assertTrue(t.isSuccess());
}
/**
* Pipeline setup:
* DN0 never responses after received setup request from client.
* Client gets an IOException and determine DN0 bad.
*/
@Test
public void pipeline_Fi_01() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runReceiverOpWriteBlockTest(methodName, 0, new SleepAction(methodName, 0, 0));
}
/**
* Pipeline setup:
* DN1 never responses after received setup request from client.
* Client gets an IOException and determine DN1 bad.
*/
@Test
public void pipeline_Fi_02() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runReceiverOpWriteBlockTest(methodName, 1, new SleepAction(methodName, 1, 0));
}
/**
* Pipeline setup:
* DN2 never responses after received setup request from client.
* Client gets an IOException and determine DN2 bad.
*/
@Test
public void pipeline_Fi_03() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runReceiverOpWriteBlockTest(methodName, 2, new SleepAction(methodName, 2, 0));
}
/**
* Pipeline setup, DN1 never responses after received setup ack from DN2.
* Client gets an IOException and determine DN1 bad.
*/
@Test
public void pipeline_Fi_04() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runStatusReadTest(methodName, 1, new SleepAction(methodName, 1, 0));
}
/**
* Pipeline setup, DN0 never responses after received setup ack from DN1.
* Client gets an IOException and determine DN0 bad.
*/
@Test
public void pipeline_Fi_05() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runStatusReadTest(methodName, 0, new SleepAction(methodName, 0, 0));
}
/**
* Pipeline setup with DN0 very slow but it won't lead to timeout.
* Client finishes setup successfully.
*/
@Test
public void pipeline_Fi_06() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runSlowDatanodeTest(methodName, new SleepAction(methodName, 0, 3000));
}
/**
* Pipeline setup with DN1 very slow but it won't lead to timeout.
* Client finishes setup successfully.
*/
@Test
public void pipeline_Fi_07() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runSlowDatanodeTest(methodName, new SleepAction(methodName, 1, 3000));
}
/**
* Pipeline setup with DN2 very slow but it won't lead to timeout.
* Client finishes setup successfully.
*/
@Test
public void pipeline_Fi_08() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runSlowDatanodeTest(methodName, new SleepAction(methodName, 2, 3000));
}
/**
* Pipeline setup, DN0 throws an OutOfMemoryException right after it
* received a setup request from client.
* Client gets an IOException and determine DN0 bad.
*/
@Test
public void pipeline_Fi_09() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runReceiverOpWriteBlockTest(methodName, 0, new OomAction(methodName, 0));
}
/**
* Pipeline setup, DN1 throws an OutOfMemoryException right after it
* received a setup request from DN0.
* Client gets an IOException and determine DN1 bad.
*/
@Test
public void pipeline_Fi_10() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runReceiverOpWriteBlockTest(methodName, 1, new OomAction(methodName, 1));
}
/**
* Pipeline setup, DN2 throws an OutOfMemoryException right after it
* received a setup request from DN1.
* Client gets an IOException and determine DN2 bad.
*/
@Test
public void pipeline_Fi_11() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runReceiverOpWriteBlockTest(methodName, 2, new OomAction(methodName, 2));
}
/**
* Pipeline setup, DN1 throws an OutOfMemoryException right after it
* received a setup ack from DN2.
* Client gets an IOException and determine DN1 bad.
*/
@Test
public void pipeline_Fi_12() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runStatusReadTest(methodName, 1, new OomAction(methodName, 1));
}
/**
* Pipeline setup, DN0 throws an OutOfMemoryException right after it
* received a setup ack from DN1.
* Client gets an IOException and determine DN0 bad.
*/
@Test
public void pipeline_Fi_13() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runStatusReadTest(methodName, 0, new OomAction(methodName, 0));
}
/**
* Streaming: Write a packet, DN0 throws a DiskOutOfSpaceError
* when it writes the data to disk.
* Client gets an IOException and determine DN0 bad.
*/
@Test
public void pipeline_Fi_14() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runCallWritePacketToDisk(methodName, 0, new DoosAction(methodName, 0));
}
/**
* Streaming: Write a packet, DN1 throws a DiskOutOfSpaceError
* when it writes the data to disk.
* Client gets an IOException and determine DN1 bad.
*/
@Test
public void pipeline_Fi_15() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runCallWritePacketToDisk(methodName, 1, new DoosAction(methodName, 1));
}
/**
* Streaming: Write a packet, DN2 throws a DiskOutOfSpaceError
* when it writes the data to disk.
* Client gets an IOException and determine DN2 bad.
*/
@Test
public void pipeline_Fi_16() throws IOException {
final String methodName = FiTestUtil.getMethodName();
runCallWritePacketToDisk(methodName, 2, new DoosAction(methodName, 2));
}
}