| /** |
| * 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.streaming; |
| |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapred.MapReduceBase; |
| import org.apache.hadoop.mapred.OutputCollector; |
| import org.apache.hadoop.mapred.Reducer; |
| import org.apache.hadoop.mapred.Reporter; |
| import org.apache.hadoop.mapreduce.MRJobConfig; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.util.Iterator; |
| |
| /** |
| * Tests stream job with java tasks, commands in MapReduce local mode. |
| * Validates if user-set config properties |
| * {@link MRJobConfig#MAP_OUTPUT_KEY_CLASS} and |
| * {@link MRJobConfig#OUTPUT_KEY_CLASS} are honored by streaming jobs. |
| */ |
| public class TestStreamingOutputKeyValueTypes extends TestStreaming { |
| |
| public TestStreamingOutputKeyValueTypes() throws IOException { |
| super(); |
| input = "one line dummy input\n"; |
| } |
| |
| @Before |
| @Override |
| public void setUp() throws IOException { |
| args.clear(); |
| super.setUp(); |
| } |
| |
| @Override |
| protected String[] genArgs() { |
| // set the testcase-specific config properties first and the remaining |
| // arguments are set in TestStreaming.genArgs(). |
| args.add("-jobconf"); |
| args.add(MRJobConfig.MAP_OUTPUT_KEY_CLASS + |
| "=org.apache.hadoop.io.LongWritable"); |
| args.add("-jobconf"); |
| args.add(MRJobConfig.OUTPUT_KEY_CLASS + |
| "=org.apache.hadoop.io.LongWritable"); |
| |
| // Using SequenceFileOutputFormat here because with TextOutputFormat, the |
| // mapred.output.key.class set in JobConf (which we want to test here) is |
| // not read/used at all. |
| args.add("-outputformat"); |
| args.add("org.apache.hadoop.mapred.SequenceFileOutputFormat"); |
| |
| return super.genArgs(); |
| } |
| |
| @Override |
| protected void checkOutput() throws IOException { |
| // No need to validate output for the test cases in this class |
| } |
| |
| public static class MyReducer<K, V> |
| extends MapReduceBase implements Reducer<K, V, LongWritable, Text> { |
| |
| public void reduce(K key, Iterator<V> values, |
| OutputCollector<LongWritable, Text> output, Reporter reporter) |
| throws IOException { |
| LongWritable l = new LongWritable(); |
| while (values.hasNext()) { |
| output.collect(l, new Text(values.next().toString())); |
| } |
| } |
| } |
| |
| // Check with Java Mapper, Java Reducer |
| @Test |
| public void testJavaMapperAndJavaReducer() throws Exception { |
| map = "org.apache.hadoop.mapred.lib.IdentityMapper"; |
| reduce = "org.apache.hadoop.mapred.lib.IdentityReducer"; |
| super.testCommandLine(); |
| } |
| |
| // Check with Java Mapper, Java Reducer and -numReduceTasks 0 |
| @Test |
| public void testJavaMapperAndJavaReducerAndZeroReduces() throws Exception { |
| map = "org.apache.hadoop.mapred.lib.IdentityMapper"; |
| reduce = "org.apache.hadoop.mapred.lib.IdentityReducer"; |
| args.add("-numReduceTasks"); |
| args.add("0"); |
| super.testCommandLine(); |
| } |
| |
| // Check with Java Mapper, Reducer = "NONE" |
| @Test |
| public void testJavaMapperWithReduceNone() throws Exception { |
| map = "org.apache.hadoop.mapred.lib.IdentityMapper"; |
| reduce = "NONE"; |
| super.testCommandLine(); |
| } |
| |
| // Check with Java Mapper, command Reducer |
| @Test |
| public void testJavaMapperAndCommandReducer() throws Exception { |
| map = "org.apache.hadoop.mapred.lib.IdentityMapper"; |
| reduce = "cat"; |
| super.testCommandLine(); |
| } |
| |
| // Check with Java Mapper, command Reducer and -numReduceTasks 0 |
| @Test |
| public void testJavaMapperAndCommandReducerAndZeroReduces() throws Exception { |
| map = "org.apache.hadoop.mapred.lib.IdentityMapper"; |
| reduce = "cat"; |
| args.add("-numReduceTasks"); |
| args.add("0"); |
| super.testCommandLine(); |
| } |
| |
| // Check with Command Mapper, Java Reducer |
| @Test |
| public void testCommandMapperAndJavaReducer() throws Exception { |
| map = "cat"; |
| reduce = MyReducer.class.getName(); |
| super.testCommandLine(); |
| } |
| |
| // Check with Command Mapper, Java Reducer and -numReduceTasks 0 |
| @Test |
| public void testCommandMapperAndJavaReducerAndZeroReduces() throws Exception { |
| map = "cat"; |
| reduce = MyReducer.class.getName(); |
| args.add("-numReduceTasks"); |
| args.add("0"); |
| super.testCommandLine(); |
| } |
| |
| // Check with Command Mapper, Reducer = "NONE" |
| @Test |
| public void testCommandMapperWithReduceNone() throws Exception { |
| map = "cat"; |
| reduce = "NONE"; |
| super.testCommandLine(); |
| } |
| |
| // Check with Command Mapper, Command Reducer |
| @Test |
| public void testCommandMapperAndCommandReducer() throws Exception { |
| map = "cat"; |
| reduce = "cat"; |
| super.testCommandLine(); |
| } |
| |
| // Check with Command Mapper, Command Reducer and -numReduceTasks 0 |
| @Test |
| public void testCommandMapperAndCommandReducerAndZeroReduces() |
| throws Exception { |
| map = "cat"; |
| reduce = "cat"; |
| args.add("-numReduceTasks"); |
| args.add("0"); |
| super.testCommandLine(); |
| } |
| |
| @Override |
| @Test |
| public void testCommandLine() { |
| // Do nothing |
| } |
| } |