| /** |
| * 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.input; |
| |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.io.File; |
| |
| import org.junit.Assert; |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl; |
| import org.apache.hadoop.mapreduce.TaskAttemptID; |
| import org.apache.hadoop.mapred.Task.TaskReporter; |
| |
| import org.mockito.Mockito; |
| |
| import org.junit.Test; |
| |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| |
| public class TestCombineFileRecordReader { |
| |
| private static Path outDir = new Path(System.getProperty("test.build.data", |
| "/tmp"), TestCombineFileRecordReader.class.getName()); |
| private static class TextRecordReaderWrapper |
| extends CombineFileRecordReaderWrapper<LongWritable,Text> { |
| // this constructor signature is required by CombineFileRecordReader |
| public TextRecordReaderWrapper(org.apache.hadoop.mapreduce.lib.input.CombineFileSplit split, |
| TaskAttemptContext context, Integer idx) |
| throws IOException, InterruptedException { |
| super(new TextInputFormat(), split, context, idx); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Test |
| public void testProgressIsReportedIfInputASeriesOfEmptyFiles() throws IOException, InterruptedException { |
| JobConf conf = new JobConf(); |
| Path[] paths = new Path[3]; |
| File[] files = new File[3]; |
| long[] fileLength = new long[3]; |
| |
| try { |
| for(int i=0;i<3;i++){ |
| File dir = new File(outDir.toString()); |
| dir.mkdir(); |
| files[i] = new File(dir,"testfile"+i); |
| FileWriter fileWriter = new FileWriter(files[i]); |
| fileWriter.flush(); |
| fileWriter.close(); |
| fileLength[i] = i; |
| paths[i] = new Path(outDir+"/testfile"+i); |
| } |
| |
| CombineFileSplit combineFileSplit = new CombineFileSplit(paths, fileLength); |
| TaskAttemptID taskAttemptID = Mockito.mock(TaskAttemptID.class); |
| TaskReporter reporter = Mockito.mock(TaskReporter.class); |
| TaskAttemptContextImpl taskAttemptContext = |
| new TaskAttemptContextImpl(conf, taskAttemptID,reporter); |
| |
| CombineFileRecordReader cfrr = new CombineFileRecordReader(combineFileSplit, |
| taskAttemptContext, TextRecordReaderWrapper.class); |
| |
| cfrr.initialize(combineFileSplit,taskAttemptContext); |
| |
| verify(reporter).progress(); |
| Assert.assertFalse(cfrr.nextKeyValue()); |
| verify(reporter, times(3)).progress(); |
| } finally { |
| FileUtil.fullyDelete(new File(outDir.toString())); |
| } |
| } |
| } |
| |