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 | |
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19 | package org.apache.hadoop.mapred; |
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20 | |
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21 | import java.io.*; |
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22 | import java.net.*; |
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23 | import junit.framework.TestCase; |
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24 | import org.apache.hadoop.conf.Configuration; |
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25 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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26 | import org.apache.hadoop.fs.FileSystem; |
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27 | import org.apache.hadoop.fs.Path; |
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28 | import org.apache.hadoop.io.IntWritable; |
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29 | import org.apache.hadoop.io.Text; |
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30 | |
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31 | |
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32 | |
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33 | /** |
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34 | * A JUnit test to test that killing completed jobs does not move them |
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35 | * to the failed sate - See JIRA HADOOP-2132 |
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36 | */ |
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37 | public class TestKillCompletedJob extends TestCase { |
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38 | |
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39 | |
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40 | static Boolean launchWordCount(String fileSys, |
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41 | String jobTracker, |
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42 | JobConf conf, |
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43 | String input, |
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44 | int numMaps, |
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45 | int numReduces) throws IOException { |
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46 | final Path inDir = new Path("/testing/wc/input"); |
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47 | final Path outDir = new Path("/testing/wc/output"); |
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48 | FileSystem fs = FileSystem.get(URI.create(fileSys), conf); |
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49 | fs.delete(outDir, true); |
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50 | if (!fs.mkdirs(inDir)) { |
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51 | throw new IOException("Mkdirs failed to create " + inDir.toString()); |
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52 | } |
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53 | { |
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54 | DataOutputStream file = fs.create(new Path(inDir, "part-0")); |
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55 | file.writeBytes(input); |
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56 | file.close(); |
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57 | } |
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58 | |
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59 | FileSystem.setDefaultUri(conf, fileSys); |
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60 | conf.set("mapred.job.tracker", jobTracker); |
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61 | conf.setJobName("wordcount"); |
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62 | conf.setInputFormat(TextInputFormat.class); |
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63 | |
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64 | // the keys are words (strings) |
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65 | conf.setOutputKeyClass(Text.class); |
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66 | // the values are counts (ints) |
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67 | conf.setOutputValueClass(IntWritable.class); |
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68 | |
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69 | conf.setMapperClass(WordCount.MapClass.class); |
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70 | conf.setCombinerClass(WordCount.Reduce.class); |
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71 | conf.setReducerClass(WordCount.Reduce.class); |
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72 | |
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73 | FileInputFormat.setInputPaths(conf, inDir); |
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74 | FileOutputFormat.setOutputPath(conf, outDir); |
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75 | conf.setNumMapTasks(numMaps); |
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76 | conf.setNumReduceTasks(numReduces); |
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77 | |
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78 | RunningJob rj = JobClient.runJob(conf); |
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79 | JobID jobId = rj.getID(); |
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80 | |
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81 | // Kill the job after it is successful |
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82 | if (rj.isSuccessful()) |
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83 | { |
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84 | System.out.println("Job Id:" + jobId + |
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85 | " completed successfully. Killing it now"); |
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86 | rj.killJob(); |
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87 | } |
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88 | |
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89 | |
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90 | return rj.isSuccessful(); |
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91 | |
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92 | } |
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93 | |
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94 | |
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95 | public void testKillCompJob() throws IOException { |
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96 | String namenode = null; |
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97 | MiniDFSCluster dfs = null; |
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98 | MiniMRCluster mr = null; |
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99 | FileSystem fileSys = null; |
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100 | try { |
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101 | final int taskTrackers = 1; |
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102 | |
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103 | Configuration conf = new Configuration(); |
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104 | dfs = new MiniDFSCluster(conf, 1, true, null); |
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105 | fileSys = dfs.getFileSystem(); |
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106 | namenode = fileSys.getUri().toString(); |
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107 | mr = new MiniMRCluster(taskTrackers, namenode, 3); |
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108 | JobConf jobConf = new JobConf(); |
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109 | |
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110 | Boolean result; |
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111 | final String jobTrackerName = "localhost:" + mr.getJobTrackerPort(); |
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112 | result = launchWordCount(namenode, jobTrackerName, jobConf, |
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113 | "Small text\n", |
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114 | 1, 0); |
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115 | assertTrue(result); |
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116 | |
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117 | } finally { |
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118 | if (dfs != null) { dfs.shutdown(); } |
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119 | if (mr != null) { mr.shutdown(); |
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120 | } |
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121 | } |
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122 | } |
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123 | |
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124 | } |
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