[120] | 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.IOException; |
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| 22 | import java.util.Random; |
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| 23 | |
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| 24 | import org.apache.hadoop.fs.*; |
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| 25 | import org.apache.hadoop.io.*; |
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| 26 | import org.apache.hadoop.io.SequenceFile.CompressionType; |
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| 27 | |
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| 28 | import junit.framework.TestCase; |
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| 29 | import org.apache.commons.logging.*; |
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| 30 | |
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| 31 | public class TestSequenceFileAsBinaryOutputFormat extends TestCase { |
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| 32 | private static final Log LOG = |
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| 33 | LogFactory.getLog(TestSequenceFileAsBinaryOutputFormat.class.getName()); |
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| 34 | |
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| 35 | private static final int RECORDS = 10000; |
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| 36 | // A random task attempt id for testing. |
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| 37 | private static final String attempt = "attempt_200707121733_0001_m_000000_0"; |
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| 38 | |
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| 39 | public void testBinary() throws IOException { |
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| 40 | JobConf job = new JobConf(); |
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| 41 | FileSystem fs = FileSystem.getLocal(job); |
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| 42 | |
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| 43 | Path dir = |
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| 44 | new Path(new Path(new Path(System.getProperty("test.build.data",".")), |
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| 45 | FileOutputCommitter.TEMP_DIR_NAME), "_" + attempt); |
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| 46 | Path file = new Path(dir, "testbinary.seq"); |
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| 47 | Random r = new Random(); |
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| 48 | long seed = r.nextLong(); |
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| 49 | r.setSeed(seed); |
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| 50 | |
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| 51 | fs.delete(dir, true); |
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| 52 | if (!fs.mkdirs(dir)) { |
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| 53 | fail("Failed to create output directory"); |
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| 54 | } |
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| 55 | |
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| 56 | job.set("mapred.task.id", attempt); |
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| 57 | FileOutputFormat.setOutputPath(job, dir.getParent().getParent()); |
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| 58 | FileOutputFormat.setWorkOutputPath(job, dir); |
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| 59 | |
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| 60 | SequenceFileAsBinaryOutputFormat.setSequenceFileOutputKeyClass(job, |
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| 61 | IntWritable.class ); |
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| 62 | SequenceFileAsBinaryOutputFormat.setSequenceFileOutputValueClass(job, |
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| 63 | DoubleWritable.class ); |
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| 64 | |
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| 65 | SequenceFileAsBinaryOutputFormat.setCompressOutput(job, true); |
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| 66 | SequenceFileAsBinaryOutputFormat.setOutputCompressionType(job, |
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| 67 | CompressionType.BLOCK); |
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| 68 | |
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| 69 | BytesWritable bkey = new BytesWritable(); |
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| 70 | BytesWritable bval = new BytesWritable(); |
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| 71 | |
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| 72 | |
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| 73 | RecordWriter <BytesWritable, BytesWritable> writer = |
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| 74 | new SequenceFileAsBinaryOutputFormat().getRecordWriter(fs, |
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| 75 | job, file.toString(), |
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| 76 | Reporter.NULL); |
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| 77 | |
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| 78 | IntWritable iwritable = new IntWritable(); |
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| 79 | DoubleWritable dwritable = new DoubleWritable(); |
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| 80 | DataOutputBuffer outbuf = new DataOutputBuffer(); |
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| 81 | LOG.info("Creating data by SequenceFileAsBinaryOutputFormat"); |
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| 82 | try { |
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| 83 | for (int i = 0; i < RECORDS; ++i) { |
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| 84 | iwritable = new IntWritable(r.nextInt()); |
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| 85 | iwritable.write(outbuf); |
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| 86 | bkey.set(outbuf.getData(), 0, outbuf.getLength()); |
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| 87 | outbuf.reset(); |
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| 88 | dwritable = new DoubleWritable(r.nextDouble()); |
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| 89 | dwritable.write(outbuf); |
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| 90 | bval.set(outbuf.getData(), 0, outbuf.getLength()); |
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| 91 | outbuf.reset(); |
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| 92 | writer.write(bkey, bval); |
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| 93 | } |
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| 94 | } finally { |
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| 95 | writer.close(Reporter.NULL); |
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| 96 | } |
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| 97 | |
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| 98 | InputFormat<IntWritable,DoubleWritable> iformat = |
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| 99 | new SequenceFileInputFormat<IntWritable,DoubleWritable>(); |
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| 100 | int count = 0; |
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| 101 | r.setSeed(seed); |
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| 102 | DataInputBuffer buf = new DataInputBuffer(); |
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| 103 | final int NUM_SPLITS = 3; |
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| 104 | SequenceFileInputFormat.addInputPath(job, file); |
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| 105 | LOG.info("Reading data by SequenceFileInputFormat"); |
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| 106 | for (InputSplit split : iformat.getSplits(job, NUM_SPLITS)) { |
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| 107 | RecordReader<IntWritable,DoubleWritable> reader = |
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| 108 | iformat.getRecordReader(split, job, Reporter.NULL); |
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| 109 | try { |
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| 110 | int sourceInt; |
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| 111 | double sourceDouble; |
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| 112 | while (reader.next(iwritable, dwritable)) { |
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| 113 | sourceInt = r.nextInt(); |
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| 114 | sourceDouble = r.nextDouble(); |
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| 115 | assertEquals( |
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| 116 | "Keys don't match: " + "*" + iwritable.get() + ":" + |
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| 117 | sourceInt + "*", |
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| 118 | sourceInt, iwritable.get()); |
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| 119 | assertTrue( |
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| 120 | "Vals don't match: " + "*" + dwritable.get() + ":" + |
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| 121 | sourceDouble + "*", |
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| 122 | Double.compare(dwritable.get(), sourceDouble) == 0 ); |
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| 123 | ++count; |
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| 124 | } |
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| 125 | } finally { |
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| 126 | reader.close(); |
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| 127 | } |
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| 128 | } |
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| 129 | assertEquals("Some records not found", RECORDS, count); |
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| 130 | } |
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| 131 | |
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| 132 | public void testSequenceOutputClassDefaultsToMapRedOutputClass() |
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| 133 | throws IOException { |
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| 134 | JobConf job = new JobConf(); |
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| 135 | FileSystem fs = FileSystem.getLocal(job); |
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| 136 | |
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| 137 | // Setting Random class to test getSequenceFileOutput{Key,Value}Class |
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| 138 | job.setOutputKeyClass(FloatWritable.class); |
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| 139 | job.setOutputValueClass(BooleanWritable.class); |
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| 140 | |
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| 141 | assertEquals("SequenceFileOutputKeyClass should default to ouputKeyClass", |
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| 142 | FloatWritable.class, |
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| 143 | SequenceFileAsBinaryOutputFormat.getSequenceFileOutputKeyClass( |
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| 144 | job)); |
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| 145 | assertEquals("SequenceFileOutputValueClass should default to " |
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| 146 | + "ouputValueClass", |
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| 147 | BooleanWritable.class, |
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| 148 | SequenceFileAsBinaryOutputFormat.getSequenceFileOutputValueClass( |
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| 149 | job)); |
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| 150 | |
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| 151 | SequenceFileAsBinaryOutputFormat.setSequenceFileOutputKeyClass(job, |
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| 152 | IntWritable.class ); |
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| 153 | SequenceFileAsBinaryOutputFormat.setSequenceFileOutputValueClass(job, |
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| 154 | DoubleWritable.class ); |
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| 155 | |
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| 156 | assertEquals("SequenceFileOutputKeyClass not updated", |
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| 157 | IntWritable.class, |
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| 158 | SequenceFileAsBinaryOutputFormat.getSequenceFileOutputKeyClass( |
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| 159 | job)); |
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| 160 | assertEquals("SequenceFileOutputValueClass not updated", |
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| 161 | DoubleWritable.class, |
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| 162 | SequenceFileAsBinaryOutputFormat.getSequenceFileOutputValueClass( |
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| 163 | job)); |
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| 164 | } |
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| 165 | |
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| 166 | public void testcheckOutputSpecsForbidRecordCompression() throws IOException { |
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| 167 | JobConf job = new JobConf(); |
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| 168 | FileSystem fs = FileSystem.getLocal(job); |
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| 169 | Path dir = new Path(System.getProperty("test.build.data",".") + "/mapred"); |
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| 170 | Path outputdir = new Path(System.getProperty("test.build.data",".") |
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| 171 | + "/output"); |
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| 172 | |
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| 173 | fs.delete(dir, true); |
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| 174 | fs.delete(outputdir, true); |
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| 175 | if (!fs.mkdirs(dir)) { |
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| 176 | fail("Failed to create output directory"); |
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| 177 | } |
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| 178 | |
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| 179 | FileOutputFormat.setWorkOutputPath(job, dir); |
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| 180 | |
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| 181 | // Without outputpath, FileOutputFormat.checkoutputspecs will throw |
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| 182 | // InvalidJobConfException |
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| 183 | FileOutputFormat.setOutputPath(job, outputdir); |
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| 184 | |
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| 185 | // SequenceFileAsBinaryOutputFormat doesn't support record compression |
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| 186 | // It should throw an exception when checked by checkOutputSpecs |
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| 187 | SequenceFileAsBinaryOutputFormat.setCompressOutput(job, true); |
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| 188 | |
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| 189 | SequenceFileAsBinaryOutputFormat.setOutputCompressionType(job, |
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| 190 | CompressionType.BLOCK); |
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| 191 | try { |
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| 192 | new SequenceFileAsBinaryOutputFormat().checkOutputSpecs(fs, job); |
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| 193 | } catch (Exception e) { |
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| 194 | fail("Block compression should be allowed for " |
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| 195 | + "SequenceFileAsBinaryOutputFormat:" |
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| 196 | + "Caught " + e.getClass().getName()); |
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| 197 | } |
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| 198 | |
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| 199 | SequenceFileAsBinaryOutputFormat.setOutputCompressionType(job, |
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| 200 | CompressionType.RECORD); |
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| 201 | try { |
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| 202 | new SequenceFileAsBinaryOutputFormat().checkOutputSpecs(fs, job); |
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| 203 | fail("Record compression should not be allowed for " |
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| 204 | +"SequenceFileAsBinaryOutputFormat"); |
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| 205 | } catch (InvalidJobConfException ie) { |
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| 206 | // expected |
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| 207 | } catch (Exception e) { |
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| 208 | fail("Expected " + InvalidJobConfException.class.getName() |
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| 209 | + "but caught " + e.getClass().getName() ); |
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| 210 | } |
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| 211 | } |
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| 212 | } |
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