| /** |
| * 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.mapreduce.lib.join; |
| |
| import junit.framework.TestCase; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.mapreduce.*; |
| import org.apache.hadoop.mapreduce.MapReduceTestUtil.Fake_RR; |
| import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl; |
| |
| public class TestWrappedRRClassloader extends TestCase { |
| /** |
| * Tests the class loader set by |
| * {@link Configuration#setClassLoader(ClassLoader)} |
| * is inherited by any {@link WrappedRecordReader}s created by |
| * {@link CompositeRecordReader} |
| */ |
| public void testClassLoader() throws Exception { |
| Configuration conf = new Configuration(); |
| Fake_ClassLoader classLoader = new Fake_ClassLoader(); |
| conf.setClassLoader(classLoader); |
| assertTrue(conf.getClassLoader() instanceof Fake_ClassLoader); |
| |
| FileSystem fs = FileSystem.get(conf); |
| 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") }; |
| conf.set(CompositeInputFormat.JOIN_EXPR, |
| CompositeInputFormat.compose("outer", IF_ClassLoaderChecker.class, src)); |
| |
| CompositeInputFormat<NullWritable> inputFormat = |
| new CompositeInputFormat<NullWritable>(); |
| // create dummy TaskAttemptID |
| TaskAttemptID tid = new TaskAttemptID("jt", 1, TaskType.MAP, 0, 0); |
| conf.set(JobContext.TASK_ATTEMPT_ID, tid.toString()); |
| inputFormat.createRecordReader(inputFormat.getSplits(new Job(conf)).get(0), |
| new TaskAttemptContextImpl(conf, tid)); |
| } |
| |
| public static class Fake_ClassLoader extends ClassLoader { |
| } |
| |
| public static class IF_ClassLoaderChecker<K, V> |
| extends MapReduceTestUtil.Fake_IF<K, V> { |
| |
| public IF_ClassLoaderChecker() { |
| } |
| |
| public RecordReader<K, V> createRecordReader(InputSplit ignored, |
| TaskAttemptContext context) { |
| return new RR_ClassLoaderChecker<K, V>(context.getConfiguration()); |
| } |
| } |
| |
| public static class RR_ClassLoaderChecker<K, V> extends Fake_RR<K, V> { |
| |
| @SuppressWarnings("unchecked") |
| public RR_ClassLoaderChecker(Configuration conf) { |
| assertTrue("The class loader has not been inherited from " |
| + CompositeRecordReader.class.getSimpleName(), |
| conf.getClassLoader() instanceof Fake_ClassLoader); |
| |
| } |
| } |
| } |