/**
* 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.mapreduce.task.reduce;
import static org.mockito.Matchers.*;
import static org.mockito.Mockito.*;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import javax.crypto.SecretKey;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.Counters;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.mapreduce.TaskAttemptID;
import org.apache.hadoop.mapreduce.security.SecureShuffleUtils;
import org.apache.hadoop.mapreduce.security.token.JobTokenSecretManager;
import org.junit.Test;
/**
* Test that the Fetcher does what we expect it to.
*/
public class TestFetcher {
private static final Log LOG = LogFactory.getLog(TestFetcher.class);
public static class FakeFetcher<K,V> extends Fetcher<K,V> {
private HttpURLConnection connection;
public FakeFetcher(JobConf job, TaskAttemptID reduceId,
ShuffleScheduler<K,V> scheduler, MergeManager<K,V> merger, Reporter reporter,
ShuffleClientMetrics metrics, ExceptionReporter exceptionReporter,
SecretKey jobTokenSecret, HttpURLConnection connection) {
super(job, reduceId, scheduler, merger, reporter, metrics, exceptionReporter,
jobTokenSecret);
this.connection = connection;
}
@Override
protected HttpURLConnection openConnection(URL url) throws IOException {
if(connection != null) {
return connection;
}
return super.openConnection(url);
}
}
@SuppressWarnings("unchecked")
@Test
public void testCopyFromHostBogusHeader() throws Exception {
LOG.info("testCopyFromHostBogusHeader");
JobConf job = new JobConf();
TaskAttemptID id = TaskAttemptID.forName("attempt_0_1_r_1_1");
ShuffleScheduler<Text, Text> ss = mock(ShuffleScheduler.class);
MergeManager<Text, Text> mm = mock(MergeManager.class);
Reporter r = mock(Reporter.class);
ShuffleClientMetrics metrics = mock(ShuffleClientMetrics.class);
ExceptionReporter except = mock(ExceptionReporter.class);
SecretKey key = JobTokenSecretManager.createSecretKey(new byte[]{0,0,0,0});
HttpURLConnection connection = mock(HttpURLConnection.class);
Counters.Counter allErrs = mock(Counters.Counter.class);
when(r.getCounter(anyString(), anyString()))
.thenReturn(allErrs);
Fetcher<Text,Text> underTest = new FakeFetcher<Text,Text>(job, id, ss, mm,
r, metrics, except, key, connection);
MapHost host = new MapHost("localhost", "http://localhost:8080/");
ArrayList<TaskAttemptID> maps = new ArrayList<TaskAttemptID>(1);
TaskAttemptID map1ID = TaskAttemptID.forName("attempt_0_1_m_1_1");
maps.add(map1ID);
TaskAttemptID map2ID = TaskAttemptID.forName("attempt_0_1_m_2_1");
maps.add(map2ID);
when(ss.getMapsForHost(host)).thenReturn(maps);
String encHash = "vFE234EIFCiBgYs2tCXY/SjT8Kg=";
String replyHash = SecureShuffleUtils.generateHash(encHash.getBytes(), key);
when(connection.getResponseCode()).thenReturn(200);
when(connection.getHeaderField(SecureShuffleUtils.HTTP_HEADER_REPLY_URL_HASH))
.thenReturn(replyHash);
ByteArrayInputStream in = new ByteArrayInputStream(
"\u00010 BOGUS DATA\nBOGUS DATA\nBOGUS DATA\n".getBytes());
when(connection.getInputStream()).thenReturn(in);
underTest.copyFromHost(host);
verify(connection)
.addRequestProperty(SecureShuffleUtils.HTTP_HEADER_URL_HASH,
encHash);
verify(allErrs).increment(1);
verify(ss).copyFailed(map1ID, host, true, false);
verify(ss).copyFailed(map2ID, host, true, false);
verify(ss).putBackKnownMapOutput(any(MapHost.class), eq(map1ID));
verify(ss).putBackKnownMapOutput(any(MapHost.class), eq(map2ID));
}
@SuppressWarnings("unchecked")
@Test
public void testCopyFromHostWait() throws Exception {
LOG.info("testCopyFromHostWait");
JobConf job = new JobConf();
TaskAttemptID id = TaskAttemptID.forName("attempt_0_1_r_1_1");
ShuffleScheduler<Text, Text> ss = mock(ShuffleScheduler.class);
MergeManager<Text, Text> mm = mock(MergeManager.class);
Reporter r = mock(Reporter.class);
ShuffleClientMetrics metrics = mock(ShuffleClientMetrics.class);
ExceptionReporter except = mock(ExceptionReporter.class);
SecretKey key = JobTokenSecretManager.createSecretKey(new byte[]{0,0,0,0});
HttpURLConnection connection = mock(HttpURLConnection.class);
Counters.Counter allErrs = mock(Counters.Counter.class);
when(r.getCounter(anyString(), anyString()))
.thenReturn(allErrs);
Fetcher<Text,Text> underTest = new FakeFetcher<Text,Text>(job, id, ss, mm,
r, metrics, except, key, connection);
MapHost host = new MapHost("localhost", "http://localhost:8080/");
ArrayList<TaskAttemptID> maps = new ArrayList<TaskAttemptID>(1);
TaskAttemptID map1ID = TaskAttemptID.forName("attempt_0_1_m_1_1");
maps.add(map1ID);
TaskAttemptID map2ID = TaskAttemptID.forName("attempt_0_1_m_2_1");
maps.add(map2ID);
when(ss.getMapsForHost(host)).thenReturn(maps);
String encHash = "vFE234EIFCiBgYs2tCXY/SjT8Kg=";
String replyHash = SecureShuffleUtils.generateHash(encHash.getBytes(), key);
when(connection.getResponseCode()).thenReturn(200);
when(connection.getHeaderField(SecureShuffleUtils.HTTP_HEADER_REPLY_URL_HASH))
.thenReturn(replyHash);
ShuffleHeader header = new ShuffleHeader(map1ID.toString(), 10, 10, 1);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
header.write(new DataOutputStream(bout));
ByteArrayInputStream in = new ByteArrayInputStream(bout.toByteArray());
when(connection.getInputStream()).thenReturn(in);
//Defaults to WAIT, which is what we want to test
MapOutput<Text,Text> mapOut = new MapOutput<Text, Text>(map1ID);
when(mm.reserve(any(TaskAttemptID.class), anyLong(), anyInt()))
.thenReturn(mapOut);
underTest.copyFromHost(host);
verify(connection)
.addRequestProperty(SecureShuffleUtils.HTTP_HEADER_URL_HASH,
encHash);
verify(allErrs, never()).increment(1);
verify(ss, never()).copyFailed(map1ID, host, true, false);
verify(ss, never()).copyFailed(map2ID, host, true, false);
verify(ss).putBackKnownMapOutput(any(MapHost.class), eq(map1ID));
verify(ss).putBackKnownMapOutput(any(MapHost.class), eq(map2ID));
}
}