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 junit.framework.TestCase; |
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23 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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24 | import org.apache.hadoop.fs.FileSystem; |
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25 | import org.apache.hadoop.mapred.MRCaching.TestResult; |
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26 | |
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27 | /** |
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28 | * A JUnit test to test caching with DFS |
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29 | * |
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30 | */ |
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31 | public class TestMiniMRDFSCaching extends TestCase { |
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32 | |
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33 | public void testWithDFS() throws IOException { |
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34 | MiniMRCluster mr = null; |
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35 | MiniDFSCluster dfs = null; |
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36 | FileSystem fileSys = null; |
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37 | try { |
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38 | JobConf conf = new JobConf(); |
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39 | conf.set("fs.hdfs.impl", |
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40 | "org.apache.hadoop.hdfs.ChecksumDistributedFileSystem"); |
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41 | dfs = new MiniDFSCluster(conf, 1, true, null); |
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42 | fileSys = dfs.getFileSystem(); |
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43 | mr = new MiniMRCluster(2, fileSys.getName(), 4); |
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44 | MRCaching.setupCache("/cachedir", fileSys); |
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45 | // run the wordcount example with caching |
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46 | TestResult ret = MRCaching.launchMRCache("/testing/wc/input", |
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47 | "/testing/wc/output", |
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48 | "/cachedir", |
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49 | mr.createJobConf(), |
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50 | "The quick brown fox\nhas many silly\n" |
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51 | + "red fox sox\n", false); |
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52 | assertTrue("Archives not matching", ret.isOutputOk); |
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53 | // launch MR cache with symlinks |
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54 | ret = MRCaching.launchMRCache("/testing/wc/input", |
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55 | "/testing/wc/output", |
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56 | "/cachedir", |
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57 | mr.createJobConf(), |
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58 | "The quick brown fox\nhas many silly\n" |
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59 | + "red fox sox\n", true); |
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60 | assertTrue("Archives not matching", ret.isOutputOk); |
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61 | } finally { |
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62 | if (fileSys != null) { |
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63 | fileSys.close(); |
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64 | } |
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65 | if (dfs != null) { |
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66 | dfs.shutdown(); |
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67 | } |
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68 | if (mr != null) { |
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69 | mr.shutdown(); |
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70 | } |
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71 | } |
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72 | } |
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73 | |
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74 | public static void main(String[] argv) throws Exception { |
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75 | TestMiniMRDFSCaching td = new TestMiniMRDFSCaching(); |
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76 | td.testWithDFS(); |
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77 | } |
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78 | } |
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