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/*
* 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.hbase.regionserver.wal;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.io.util.Dictionary;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.wal.WAL;
import org.apache.hadoop.hbase.wal.WALFactory;
import org.apache.hadoop.hbase.wal.WALProvider;
import org.apache.hadoop.hbase.wal.WALStreamReader;
import org.apache.hadoop.io.WritableUtils;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;
/**
* A set of static functions for running our custom WAL compression/decompression. Also contains a
* command line tool to compress and uncompress WALs.
*/
@InterfaceAudience.Private
public class Compressor {
/**
* Command line tool to compress and uncompress WALs.
*/
public static void main(String[] args) throws IOException {
if (args.length != 2 || args[0].equals("--help") || args[0].equals("-h")) {
printHelp();
System.exit(-1);
}
Path inputPath = new Path(args[0]);
Path outputPath = new Path(args[1]);
transformFile(inputPath, outputPath);
}
private static void printHelp() {
System.err.println("usage: Compressor