/**
* 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.mrunit.mapreduce;
import java.io.IOException;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;
import org.junit.Test;
/**
* Test that the mapper state is maintained. Essentially checks that the cleanup
* method is called only once per task.
*/
public class TestStatefulMapReduce {
@Test
public void testClosedFormMapReduce() throws IOException {
MapReduceDriver<LongWritable, Text, Text, IntWritable, Text, IntWritable> mapReduceDriver
= MapReduceDriver.newMapReduceDriver(new StatefulMapper(), new Reducer());
mapReduceDriver.addInput(new LongWritable(1L), new Text("hello"));
mapReduceDriver.addInput(new LongWritable(2L), new Text("schmo"));
mapReduceDriver.withOutput(new Text("SomeKey"), new IntWritable(2));
mapReduceDriver.runTest();
}
}