/*
* 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.flink.api.common.io;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.core.fs.FileInputSplit;
import org.apache.flink.core.memory.DataInputView;
import org.apache.flink.types.Record;
import org.junit.Assert;
import org.junit.Test;
public class BinaryInputFormatTest {
private static final class MyBinaryInputFormat extends BinaryInputFormat<Record> {
private static final long serialVersionUID = 1L;
@Override
protected Record deserialize(Record record, DataInputView dataInput) {
return record;
}
}
@Test
public void testCreateInputSplitsWithOneFile() throws IOException {
// create temporary file with 3 blocks
final File tempFile = File.createTempFile("binary_input_format_test", "tmp");
tempFile.deleteOnExit();
final int blockInfoSize = new BlockInfo().getInfoSize();
final int blockSize = blockInfoSize + 8;
final int numBlocks = 3;
FileOutputStream fileOutputStream = new FileOutputStream(tempFile);
for(int i = 0; i < blockSize * numBlocks; i++) {
fileOutputStream.write(new byte[]{1});
}
fileOutputStream.close();
final Configuration config = new Configuration();
config.setLong("input.block_size", blockSize + 10);
final BinaryInputFormat<Record> inputFormat = new MyBinaryInputFormat();
inputFormat.setFilePath(tempFile.toURI().toString());
inputFormat.setBlockSize(blockSize);
inputFormat.configure(config);
FileInputSplit[] inputSplits = inputFormat.createInputSplits(numBlocks);
Assert.assertEquals("Returns requested numbers of splits.", numBlocks, inputSplits.length);
Assert.assertEquals("1. split has block size length.", blockSize, inputSplits[0].getLength());
Assert.assertEquals("2. split has block size length.", blockSize, inputSplits[1].getLength());
Assert.assertEquals("3. split has block size length.", blockSize, inputSplits[2].getLength());
}
}