| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.mapred.join; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableComparable; |
| import org.apache.hadoop.mapred.InputFormat; |
| import org.apache.hadoop.mapred.InputSplit; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.JobConfigurable; |
| import org.apache.hadoop.mapred.RecordReader; |
| import org.apache.hadoop.mapred.Reporter; |
| import org.apache.hadoop.util.ReflectionUtils; |
| |
| public class TestWrappedRecordReaderClassloader extends TestCase { |
| /** |
| * Tests the class loader set by {@link JobConf#setClassLoader(ClassLoader)} |
| * is inherited by any {@link WrappedRecordReader}s created by |
| * {@link CompositeRecordReader} |
| */ |
| public void testClassLoader() throws Exception { |
| JobConf job = new JobConf(); |
| Fake_ClassLoader classLoader = new Fake_ClassLoader(); |
| job.setClassLoader(classLoader); |
| assertTrue(job.getClassLoader() instanceof Fake_ClassLoader); |
| |
| FileSystem fs = FileSystem.get(job); |
| Path testdir = new Path(System.getProperty("test.build.data", "/tmp")) |
| .makeQualified(fs); |
| |
| Path base = new Path(testdir, "/empty"); |
| Path[] src = { new Path(base, "i0"), new Path("i1"), new Path("i2") }; |
| job.set("mapreduce.join.expr", CompositeInputFormat.compose("outer", |
| IF_ClassLoaderChecker.class, src)); |
| |
| CompositeInputFormat<NullWritable> inputFormat = new CompositeInputFormat<NullWritable>(); |
| inputFormat.getRecordReader(inputFormat.getSplits(job, 1)[0], job, |
| Reporter.NULL); |
| } |
| |
| public static class Fake_ClassLoader extends ClassLoader { |
| } |
| |
| public static class IF_ClassLoaderChecker<K, V> implements InputFormat<K, V>, |
| JobConfigurable { |
| |
| public static class FakeSplit implements InputSplit { |
| public void write(DataOutput out) throws IOException { |
| } |
| |
| public void readFields(DataInput in) throws IOException { |
| } |
| |
| public long getLength() { |
| return 0L; |
| } |
| |
| public String[] getLocations() { |
| return new String[0]; |
| } |
| } |
| |
| public static void setKeyClass(JobConf job, Class<?> k) { |
| job.setClass("test.fakeif.keyclass", k, WritableComparable.class); |
| } |
| |
| public static void setValClass(JobConf job, Class<?> v) { |
| job.setClass("test.fakeif.valclass", v, Writable.class); |
| } |
| |
| protected Class<? extends K> keyclass; |
| protected Class<? extends V> valclass; |
| |
| @SuppressWarnings("unchecked") |
| public void configure(JobConf job) { |
| keyclass = (Class<? extends K>) job.getClass("test.fakeif.keyclass", |
| NullWritable.class, WritableComparable.class); |
| valclass = (Class<? extends V>) job.getClass("test.fakeif.valclass", |
| NullWritable.class, WritableComparable.class); |
| } |
| |
| public IF_ClassLoaderChecker() { |
| } |
| |
| public InputSplit[] getSplits(JobConf conf, int splits) { |
| return new InputSplit[] { new FakeSplit() }; |
| } |
| |
| public RecordReader<K, V> getRecordReader(InputSplit ignored, JobConf job, |
| Reporter reporter) { |
| return new RR_ClassLoaderChecker<K, V>(job); |
| } |
| } |
| |
| public static class RR_ClassLoaderChecker<K, V> implements RecordReader<K, V> { |
| private Class<? extends K> keyclass; |
| private Class<? extends V> valclass; |
| |
| @SuppressWarnings("unchecked") |
| public RR_ClassLoaderChecker(JobConf job) { |
| assertTrue("The class loader has not been inherited from " |
| + CompositeRecordReader.class.getSimpleName(), |
| job.getClassLoader() instanceof Fake_ClassLoader); |
| |
| keyclass = (Class<? extends K>) job.getClass("test.fakeif.keyclass", |
| NullWritable.class, WritableComparable.class); |
| valclass = (Class<? extends V>) job.getClass("test.fakeif.valclass", |
| NullWritable.class, WritableComparable.class); |
| } |
| |
| public boolean next(K key, V value) throws IOException { |
| return false; |
| } |
| |
| public K createKey() { |
| return ReflectionUtils.newInstance(keyclass, null); |
| } |
| |
| public V createValue() { |
| return ReflectionUtils.newInstance(valclass, null); |
| } |
| |
| public long getPos() throws IOException { |
| return 0L; |
| } |
| |
| public void close() throws IOException { |
| } |
| |
| public float getProgress() throws IOException { |
| return 0.0f; |
| } |
| } |
| } |