/**
* 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.lib;
import java.io.File;
import java.io.FileWriter;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.TextInputFormat;
import org.apache.hadoop.fs.FileUtil;
import org.junit.Test;
import org.mockito.Mockito;
import org.junit.Assert;
import java.io.IOException;
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 org.apache.hadoop.mapred.lib.CombineFileRecordReaderWrapper<LongWritable,Text> {
// this constructor signature is required by CombineFileRecordReader
public TextRecordReaderWrapper(CombineFileSplit split, Configuration conf,
Reporter reporter, Integer idx) throws IOException {
super(new TextInputFormat(), split, conf, reporter, idx);
}
}
@SuppressWarnings("unchecked")
@Test
public void testInitNextRecordReader() throws IOException{
JobConf conf = new JobConf();
Path[] paths = new Path[3];
long[] fileLength = new long[3];
File[] files = new File[3];
LongWritable key = new LongWritable(1);
Text value = new Text();
try {
for(int i=0;i<3;i++){
fileLength[i] = i;
File dir = new File(outDir.toString());
dir.mkdir();
files[i] = new File(dir,"testfile"+i);
FileWriter fileWriter = new FileWriter(files[i]);
fileWriter.close();
paths[i] = new Path(outDir+"/testfile"+i);
}
CombineFileSplit combineFileSplit = new CombineFileSplit(conf, paths, fileLength);
Reporter reporter = Mockito.mock(Reporter.class);
CombineFileRecordReader cfrr = new CombineFileRecordReader(conf, combineFileSplit,
reporter, TextRecordReaderWrapper.class);
verify(reporter).progress();
Assert.assertFalse(cfrr.next(key,value));
verify(reporter, times(3)).progress();
} finally {
FileUtil.fullyDelete(new File(outDir.toString()));
}
}
}