/*
* Copyright 2011 the original author or authors.
*
* 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 org.springframework.data.hadoop.mapreduce;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import javax.annotation.Resource;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.Job;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.data.hadoop.TestUtils;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* Test running a basic streaming example
*
* $HADOOP_HOME/bin/hadoop jar $HADOOP_HOME/hadoop-streaming.jar \
* -D mapreduce.job.reduces=2 \
* -input myInputDirs \
* -output myOutputDir \
* -mapper /bin/cat \
* -reducer /bin/wc
*
*
* @author Costin Leau
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/org/springframework/data/hadoop/streaming/basic.xml")
public class StreamingTest {
@Autowired
private ApplicationContext ctx;
@Resource(name = "ns-stream-job")
private Job job;
{
TestUtils.hackHadoopStagingOnWin();
}
@Test
public void testStreaming() throws Exception {
cleanOutput(ctx);
assertTrue(ctx.isPrototype("vanilla-stream-job"));
Job job = ctx.getBean("vanilla-stream-job", Job.class);
job.waitForCompletion(true);
// equivalent
// Configuration cfg = ctx.getBean(Configuration.class);
// StreamJob stream = new StreamJob();
// stream.setConf(cfg);
// String[] args = new String[] { "-verbose", "-input", "test", "-output", "output", "-mapper",
// "E:\\tools\\nix\\unxutils\\cat", "-reducer", "E:\\tools\\nix\\unxutils\\wc" };
// stream.run(args);
//
}
@Test
public void testStreamingNS() throws Exception {
cleanOutput(ctx);
Job job = ctx.getBean("ns-stream-job", Job.class);
job.waitForCompletion(true);
}
private void cleanOutput(ApplicationContext ctx) throws Exception {
FileSystem fs = FileSystem.get(ctx.getBean(Configuration.class));
fs.copyFromLocalFile(new Path("../build.gradle"), new Path("test/"));
fs.delete(new Path("output"), true);
}
@Test
public void testJobProperties() throws Exception {
assertNotNull(job);
Configuration cfg = job.getConfiguration();
assertNotNull(cfg);
assertEquals("chasing", cfg.get("star"));
assertEquals("captain eo", cfg.get("return"));
assertEquals("last", cfg.get("train"));
assertEquals("the dream", cfg.get("dancing"));
assertEquals("in the mirror", cfg.get("tears"));
assertEquals("eo", cfg.get("captain"));
}
}