Java tutorial
/* * Copyright 2013 Alex Holmes * * Licensed 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 com.htuple; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.io.LongWritable; import org.apache.hadoop.io.NullWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mrunit.mapreduce.MapReduceDriver; import org.htuple.Tuple; import org.htuple.examples.SecondarySort; import org.junit.Before; import org.junit.Test; import java.io.IOException; /** * Basic tests for the {@link org.htuple.examples.SecondarySort} class. */ public class SecondarySortTest { MapReduceDriver<LongWritable, Text, Tuple, Text, Text, NullWritable> mapReduceDriver; @Before public void setUp() { mapReduceDriver = MapReduceDriver.newMapReduceDriver(new SecondarySort.Map(), new SecondarySort.Reduce()); } @Test public void testSecondarySort() throws IOException { Configuration conf = mapReduceDriver.getConfiguration(); SecondarySort.setupSecondarySort(conf); LongWritable dummyMapKey = new LongWritable(1); mapReduceDriver.withInput(dummyMapKey, new Text("Smith\tJohn\n")) .withInput(dummyMapKey, new Text("Smith\tAnne\n")).withInput(dummyMapKey, new Text("Smith\tKen\n")) .withOutput(new Text("Smith\tAnne\n"), NullWritable.get()) .withOutput(new Text("Smith\tJohn\n"), NullWritable.get()) .withOutput(new Text("Smith\tKen\n"), NullWritable.get()).runTest(true); } }