1 | /** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one |
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3 | * or more contributor license agreements. See the NOTICE file |
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4 | * distributed with this work for additional information |
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5 | * regarding copyright ownership. The ASF licenses this file |
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6 | * to you under the Apache License, Version 2.0 (the |
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7 | * "License"); you may not use this file except in compliance |
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8 | * with the License. You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | package org.apache.hadoop.conf; |
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19 | |
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20 | import junit.framework.Assert; |
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21 | |
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22 | import org.apache.hadoop.mapred.*; |
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23 | import org.apache.hadoop.fs.Path; |
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24 | import org.apache.hadoop.fs.FileUtil; |
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25 | import org.apache.hadoop.io.LongWritable; |
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26 | import org.apache.hadoop.io.Text; |
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27 | |
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28 | import java.io.*; |
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29 | |
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30 | /** |
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31 | * This testcase tests that a JobConf without default values submits jobs |
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32 | * properly and the JT applies its own default values to it to make the job |
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33 | * run properly. |
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34 | */ |
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35 | public class TestNoDefaultsJobConf extends HadoopTestCase { |
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36 | |
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37 | public TestNoDefaultsJobConf() throws IOException { |
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38 | super(HadoopTestCase.CLUSTER_MR, HadoopTestCase.DFS_FS, 1, 1); |
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39 | } |
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40 | |
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41 | public void testNoDefaults() throws Exception { |
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42 | JobConf configuration = new JobConf(); |
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43 | assertTrue(configuration.get("hadoop.tmp.dir", null) != null); |
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44 | |
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45 | configuration = new JobConf(false); |
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46 | assertTrue(configuration.get("hadoop.tmp.dir", null) == null); |
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47 | |
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48 | |
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49 | Path inDir = new Path("testing/jobconf/input"); |
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50 | Path outDir = new Path("testing/jobconf/output"); |
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51 | |
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52 | OutputStream os = getFileSystem().create(new Path(inDir, "text.txt")); |
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53 | Writer wr = new OutputStreamWriter(os); |
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54 | wr.write("hello\n"); |
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55 | wr.write("hello\n"); |
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56 | wr.close(); |
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57 | |
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58 | JobConf conf = new JobConf(false); |
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59 | |
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60 | //seeding JT and NN info into non-defaults (empty jobconf) |
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61 | conf.set("mapred.job.tracker", createJobConf().get("mapred.job.tracker")); |
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62 | conf.set("fs.default.name", createJobConf().get("fs.default.name")); |
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63 | |
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64 | conf.setJobName("mr"); |
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65 | |
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66 | conf.setInputFormat(TextInputFormat.class); |
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67 | |
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68 | conf.setMapOutputKeyClass(LongWritable.class); |
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69 | conf.setMapOutputValueClass(Text.class); |
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70 | |
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71 | conf.setOutputFormat(TextOutputFormat.class); |
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72 | conf.setOutputKeyClass(LongWritable.class); |
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73 | conf.setOutputValueClass(Text.class); |
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74 | |
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75 | conf.setMapperClass(org.apache.hadoop.mapred.lib.IdentityMapper.class); |
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76 | conf.setReducerClass(org.apache.hadoop.mapred.lib.IdentityReducer.class); |
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77 | |
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78 | FileInputFormat.setInputPaths(conf, inDir); |
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79 | |
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80 | FileOutputFormat.setOutputPath(conf, outDir); |
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81 | |
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82 | JobClient.runJob(conf); |
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83 | |
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84 | Path[] outputFiles = FileUtil.stat2Paths( |
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85 | getFileSystem().listStatus(outDir, |
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86 | new OutputLogFilter())); |
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87 | if (outputFiles.length > 0) { |
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88 | InputStream is = getFileSystem().open(outputFiles[0]); |
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89 | BufferedReader reader = new BufferedReader(new InputStreamReader(is)); |
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90 | String line = reader.readLine(); |
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91 | int counter = 0; |
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92 | while (line != null) { |
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93 | counter++; |
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94 | assertTrue(line.contains("hello")); |
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95 | line = reader.readLine(); |
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96 | } |
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97 | reader.close(); |
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98 | assertEquals(2, counter); |
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99 | } |
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100 | |
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101 | } |
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102 | |
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103 | } |
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