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.fs; |
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20 | |
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21 | import java.net.URI; |
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22 | |
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23 | import org.apache.hadoop.fs.FileSystem; |
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24 | import org.apache.hadoop.fs.InMemoryFileSystem; |
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25 | import org.apache.hadoop.fs.FSDataOutputStream; |
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26 | import org.apache.hadoop.conf.Configuration; |
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27 | import junit.framework.TestCase; |
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28 | |
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29 | public class TestChecksumFileSystem extends TestCase { |
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30 | public void testgetChecksumLength() throws Exception { |
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31 | assertEquals(8, ChecksumFileSystem.getChecksumLength(0L, 512)); |
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32 | assertEquals(12, ChecksumFileSystem.getChecksumLength(1L, 512)); |
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33 | assertEquals(12, ChecksumFileSystem.getChecksumLength(512L, 512)); |
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34 | assertEquals(16, ChecksumFileSystem.getChecksumLength(513L, 512)); |
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35 | assertEquals(16, ChecksumFileSystem.getChecksumLength(1023L, 512)); |
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36 | assertEquals(16, ChecksumFileSystem.getChecksumLength(1024L, 512)); |
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37 | assertEquals(408, ChecksumFileSystem.getChecksumLength(100L, 1)); |
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38 | assertEquals(4000000000008L, |
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39 | ChecksumFileSystem.getChecksumLength(10000000000000L, 10)); |
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40 | } |
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41 | |
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42 | // cehck that the checksum file is deleted for Checksum file system. |
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43 | public void testDeletionOfCheckSum() throws Exception { |
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44 | Configuration conf = new Configuration(); |
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45 | URI uri = URI.create("ramfs://mapoutput" + "_tmp"); |
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46 | InMemoryFileSystem inMemFs = (InMemoryFileSystem)FileSystem.get(uri, conf); |
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47 | Path testPath = new Path("/file_1"); |
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48 | inMemFs.reserveSpaceWithCheckSum(testPath, 1024); |
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49 | FSDataOutputStream fout = inMemFs.create(testPath); |
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50 | fout.write("testing".getBytes()); |
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51 | fout.close(); |
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52 | assertTrue("checksum exists", inMemFs.exists(inMemFs.getChecksumFile(testPath))); |
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53 | inMemFs.delete(testPath, true); |
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54 | assertTrue("checksum deleted", !inMemFs.exists(inMemFs.getChecksumFile(testPath))); |
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55 | // check for directories getting deleted. |
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56 | testPath = new Path("/tesdir/file_1"); |
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57 | inMemFs.reserveSpaceWithCheckSum(testPath, 1024); |
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58 | fout = inMemFs.create(testPath); |
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59 | fout.write("testing".getBytes()); |
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60 | fout.close(); |
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61 | testPath = new Path("/testdir/file_2"); |
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62 | inMemFs.reserveSpaceWithCheckSum(testPath, 1024); |
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63 | fout = inMemFs.create(testPath); |
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64 | fout.write("testing".getBytes()); |
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65 | fout.close(); |
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66 | inMemFs.delete(testPath, true); |
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67 | assertTrue("nothing in the namespace", inMemFs.listStatus(new Path("/")).length == 0); |
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68 | } |
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69 | |
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70 | public void testVerifyChecksum() throws Exception { |
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71 | String TEST_ROOT_DIR |
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72 | = System.getProperty("test.build.data","build/test/data/work-dir/localfs"); |
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73 | |
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74 | Configuration conf = new Configuration(); |
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75 | LocalFileSystem localFs = FileSystem.getLocal(conf); |
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76 | Path testPath = new Path(TEST_ROOT_DIR, "testPath"); |
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77 | Path testPath11 = new Path(TEST_ROOT_DIR, "testPath11"); |
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78 | FSDataOutputStream fout = localFs.create(testPath); |
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79 | fout.write("testing".getBytes()); |
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80 | fout.close(); |
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81 | |
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82 | fout = localFs.create(testPath11); |
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83 | fout.write("testing you".getBytes()); |
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84 | fout.close(); |
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85 | |
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86 | localFs.delete(localFs.getChecksumFile(testPath), true); |
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87 | assertTrue("checksum deleted", !localFs.exists(localFs.getChecksumFile(testPath))); |
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88 | |
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89 | //copying the wrong checksum file |
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90 | FileUtil.copy(localFs, localFs.getChecksumFile(testPath11), localFs, |
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91 | localFs.getChecksumFile(testPath),false,true,conf); |
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92 | assertTrue("checksum exists", localFs.exists(localFs.getChecksumFile(testPath))); |
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93 | |
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94 | boolean errorRead = false; |
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95 | try { |
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96 | TestLocalFileSystem.readFile(localFs, testPath); |
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97 | }catch(ChecksumException ie) { |
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98 | errorRead = true; |
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99 | } |
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100 | assertTrue("error reading", errorRead); |
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101 | |
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102 | //now setting verify false, the read should succeed |
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103 | localFs.setVerifyChecksum(false); |
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104 | String str = TestLocalFileSystem.readFile(localFs, testPath); |
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105 | assertTrue("read", "testing".equals(str)); |
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106 | |
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107 | } |
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108 | } |
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