| /** |
| * 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.conf; |
| |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapred.FileInputFormat; |
| import org.apache.hadoop.mapred.FileOutputFormat; |
| import org.apache.hadoop.mapred.HadoopTestCase; |
| import org.apache.hadoop.mapred.JobClient; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.TextInputFormat; |
| import org.apache.hadoop.mapred.TextOutputFormat; |
| import org.apache.hadoop.mapred.Utils; |
| import org.junit.Test; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.Writer; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * This testcase tests that a JobConf without default values submits jobs |
| * properly and the JT applies its own default values to it to make the job |
| * run properly. |
| */ |
| public class TestNoDefaultsJobConf extends HadoopTestCase { |
| |
| public TestNoDefaultsJobConf() throws IOException { |
| super(HadoopTestCase.CLUSTER_MR, HadoopTestCase.DFS_FS, 1, 1); |
| } |
| |
| @Test |
| public void testNoDefaults() throws Exception { |
| JobConf configuration = new JobConf(); |
| assertTrue(configuration.get("hadoop.tmp.dir", null) != null); |
| |
| configuration = new JobConf(false); |
| assertTrue(configuration.get("hadoop.tmp.dir", null) == null); |
| |
| |
| Path inDir = new Path("testing/jobconf/input"); |
| Path outDir = new Path("testing/jobconf/output"); |
| |
| OutputStream os = getFileSystem().create(new Path(inDir, "text.txt")); |
| Writer wr = new OutputStreamWriter(os); |
| wr.write("hello\n"); |
| wr.write("hello\n"); |
| wr.close(); |
| |
| JobConf conf = new JobConf(false); |
| |
| conf.set("fs.defaultFS", createJobConf().get("fs.defaultFS")); |
| |
| conf.setJobName("mr"); |
| |
| conf.setInputFormat(TextInputFormat.class); |
| |
| conf.setMapOutputKeyClass(LongWritable.class); |
| conf.setMapOutputValueClass(Text.class); |
| |
| conf.setOutputFormat(TextOutputFormat.class); |
| conf.setOutputKeyClass(LongWritable.class); |
| conf.setOutputValueClass(Text.class); |
| |
| conf.setMapperClass(org.apache.hadoop.mapred.lib.IdentityMapper.class); |
| conf.setReducerClass(org.apache.hadoop.mapred.lib.IdentityReducer.class); |
| |
| FileInputFormat.setInputPaths(conf, inDir); |
| |
| FileOutputFormat.setOutputPath(conf, outDir); |
| |
| JobClient.runJob(conf); |
| |
| Path[] outputFiles = FileUtil.stat2Paths( |
| getFileSystem().listStatus(outDir, |
| new Utils.OutputFileUtils.OutputFilesFilter())); |
| if (outputFiles.length > 0) { |
| InputStream is = getFileSystem().open(outputFiles[0]); |
| BufferedReader reader = new BufferedReader(new InputStreamReader(is)); |
| String line = reader.readLine(); |
| int counter = 0; |
| while (line != null) { |
| counter++; |
| assertTrue(line.contains("hello")); |
| line = reader.readLine(); |
| } |
| reader.close(); |
| assertEquals(2, counter); |
| } |
| |
| } |
| |
| } |