/*
* 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.io.compress;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.hadoop.conf.Configurable;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.compress.lz4.Lz4Compressor;
import org.apache.hadoop.io.compress.lz4.Lz4Decompressor;
import org.apache.hadoop.util.NativeCodeLoader;
/**
* This class creates lz4 compressors/decompressors.
*/
public class Lz4hcCodec extends Lz4Codec {
/**
* Create a new {@link Compressor} for use by this {@link CompressionCodec}.
*
* @return a new compressor for use by this codec
*/
@Override
public Compressor createCompressor() {
if (!isNativeCodeLoaded()) {
throw new RuntimeException("native lz4 library not available");
}
int bufferSize = conf.getInt(
IO_COMPRESSION_CODEC_LZ4_BUFFERSIZE_KEY,
IO_COMPRESSION_CODEC_LZ4_BUFFERSIZE_DEFAULT);
System.out.println("Create Lz4hc codec");
return new Lz4Compressor(bufferSize, true);
}
}