[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 | |
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| 27 | import junit.framework.TestCase; |
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| 28 | import org.apache.commons.logging.*; |
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| 29 | |
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| 30 | public class TestSequenceFileAsBinaryInputFormat extends TestCase { |
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| 31 | private static final Log LOG = FileInputFormat.LOG; |
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| 32 | private static final int RECORDS = 10000; |
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| 33 | |
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| 34 | public void testBinary() throws IOException { |
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| 35 | JobConf job = new JobConf(); |
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| 36 | FileSystem fs = FileSystem.getLocal(job); |
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| 37 | Path dir = new Path(System.getProperty("test.build.data",".") + "/mapred"); |
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| 38 | Path file = new Path(dir, "testbinary.seq"); |
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| 39 | Random r = new Random(); |
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| 40 | long seed = r.nextLong(); |
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| 41 | r.setSeed(seed); |
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| 42 | |
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| 43 | fs.delete(dir, true); |
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| 44 | FileInputFormat.setInputPaths(job, dir); |
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| 45 | |
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| 46 | Text tkey = new Text(); |
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| 47 | Text tval = new Text(); |
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| 48 | |
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| 49 | SequenceFile.Writer writer = |
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| 50 | new SequenceFile.Writer(fs, job, file, Text.class, Text.class); |
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| 51 | try { |
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| 52 | for (int i = 0; i < RECORDS; ++i) { |
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| 53 | tkey.set(Integer.toString(r.nextInt(), 36)); |
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| 54 | tval.set(Long.toString(r.nextLong(), 36)); |
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| 55 | writer.append(tkey, tval); |
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| 56 | } |
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| 57 | } finally { |
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| 58 | writer.close(); |
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| 59 | } |
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| 60 | |
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| 61 | InputFormat<BytesWritable,BytesWritable> bformat = |
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| 62 | new SequenceFileAsBinaryInputFormat(); |
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| 63 | |
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| 64 | int count = 0; |
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| 65 | r.setSeed(seed); |
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| 66 | BytesWritable bkey = new BytesWritable(); |
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| 67 | BytesWritable bval = new BytesWritable(); |
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| 68 | Text cmpkey = new Text(); |
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| 69 | Text cmpval = new Text(); |
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| 70 | DataInputBuffer buf = new DataInputBuffer(); |
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| 71 | final int NUM_SPLITS = 3; |
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| 72 | FileInputFormat.setInputPaths(job, file); |
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| 73 | for (InputSplit split : bformat.getSplits(job, NUM_SPLITS)) { |
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| 74 | RecordReader<BytesWritable,BytesWritable> reader = |
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| 75 | bformat.getRecordReader(split, job, Reporter.NULL); |
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| 76 | try { |
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| 77 | while (reader.next(bkey, bval)) { |
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| 78 | tkey.set(Integer.toString(r.nextInt(), 36)); |
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| 79 | tval.set(Long.toString(r.nextLong(), 36)); |
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| 80 | buf.reset(bkey.getBytes(), bkey.getLength()); |
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| 81 | cmpkey.readFields(buf); |
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| 82 | buf.reset(bval.getBytes(), bval.getLength()); |
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| 83 | cmpval.readFields(buf); |
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| 84 | assertTrue( |
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| 85 | "Keys don't match: " + "*" + cmpkey.toString() + ":" + |
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| 86 | tkey.toString() + "*", |
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| 87 | cmpkey.toString().equals(tkey.toString())); |
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| 88 | assertTrue( |
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| 89 | "Vals don't match: " + "*" + cmpval.toString() + ":" + |
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| 90 | tval.toString() + "*", |
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| 91 | cmpval.toString().equals(tval.toString())); |
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| 92 | ++count; |
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| 93 | } |
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| 94 | } finally { |
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| 95 | reader.close(); |
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| 96 | } |
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| 97 | } |
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| 98 | assertEquals("Some records not found", RECORDS, count); |
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| 99 | } |
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| 100 | |
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| 101 | } |
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