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.util.Properties; |
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22 | |
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23 | import org.apache.commons.logging.Log; |
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24 | import org.apache.commons.logging.LogFactory; |
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25 | import org.apache.hadoop.mapred.ControlledMapReduceJob.ControlledMapReduceJobRunner; |
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26 | |
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27 | /** |
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28 | * Test to verify the controlled behavior of a ControlledMapReduceJob. |
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29 | * |
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30 | */ |
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31 | public class TestControlledMapReduceJob extends ClusterMapReduceTestCase { |
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32 | static final Log LOG = LogFactory.getLog(TestControlledMapReduceJob.class); |
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33 | |
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34 | /** |
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35 | * Starts a job with 5 maps and 5 reduces. Then controls the finishing of |
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36 | * tasks. Signals finishing tasks in batches and then verifies their |
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37 | * completion. |
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38 | * |
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39 | * @throws Exception |
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40 | */ |
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41 | public void testControlledMapReduceJob() |
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42 | throws Exception { |
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43 | |
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44 | Properties props = new Properties(); |
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45 | props.setProperty("mapred.tasktracker.map.tasks.maximum", "2"); |
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46 | props.setProperty("mapred.tasktracker.reduce.tasks.maximum", "2"); |
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47 | startCluster(true, props); |
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48 | LOG.info("Started the cluster"); |
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49 | |
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50 | ControlledMapReduceJobRunner jobRunner = |
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51 | ControlledMapReduceJobRunner |
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52 | .getControlledMapReduceJobRunner(createJobConf(), 7, 6); |
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53 | jobRunner.start(); |
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54 | ControlledMapReduceJob controlledJob = jobRunner.getJob(); |
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55 | JobInProgress jip = |
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56 | getMRCluster().getJobTrackerRunner().getJobTracker().getJob( |
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57 | jobRunner.getJobID()); |
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58 | |
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59 | ControlledMapReduceJob.waitTillNTasksStartRunning(jip, true, 4); |
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60 | LOG.info("Finishing 3 maps"); |
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61 | controlledJob.finishNTasks(true, 3); |
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62 | ControlledMapReduceJob.waitTillNTotalTasksFinish(jip, true, 3); |
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63 | |
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64 | ControlledMapReduceJob.waitTillNTasksStartRunning(jip, true, 4); |
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65 | LOG.info("Finishing 4 more maps"); |
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66 | controlledJob.finishNTasks(true, 4); |
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67 | ControlledMapReduceJob.waitTillNTotalTasksFinish(jip, true, 7); |
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68 | |
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69 | ControlledMapReduceJob.waitTillNTasksStartRunning(jip, false, 4); |
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70 | LOG.info("Finishing 2 reduces"); |
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71 | controlledJob.finishNTasks(false, 2); |
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72 | ControlledMapReduceJob.waitTillNTotalTasksFinish(jip, false, 2); |
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73 | |
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74 | ControlledMapReduceJob.waitTillNTasksStartRunning(jip, false, 4); |
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75 | LOG.info("Finishing 4 more reduces"); |
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76 | controlledJob.finishNTasks(false, 4); |
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77 | ControlledMapReduceJob.waitTillNTotalTasksFinish(jip, false, 6); |
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78 | |
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79 | jobRunner.join(); |
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80 | } |
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81 | } |
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