Java tutorial
/* * Copyright 2010-2014 the original author or authors. * * Licensed 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 com.ifeng.vdn.iparea.parser; import java.io.File; import org.apache.hadoop.conf.Configured; import org.apache.hadoop.fs.FileUtil; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; import org.apache.hadoop.util.Tool; import org.apache.hadoop.util.ToolRunner; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * @version 0.1 * * @author Hefei Li * * @since May 25, 2015 */ public class IPAreaLocalDriver extends Configured implements Tool { private static final Logger log = LoggerFactory.getLogger(IPAreaLocalDriver.class); @Override public int run(String[] args) throws Exception { Job job = Job.getInstance(getConf()); job.setJarByClass(getClass()); FileInputFormat.addInputPath(job, new Path(args[0])); FileOutputFormat.setOutputPath(job, new Path(args[1])); job.setMapperClass(IPAreaMapper.class); job.setReducerClass(IPAreaReducer.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(Text.class); return job.waitForCompletion(true) ? 0 : 1; } public static void main(String[] args) throws Exception { String input = "/home/lhfei/app_tmp/iparea.txt"; String output = "/home/lhfei/app_tmp/iparea/"; //String input = "/home/lhfei/app_tmp/vdnlog/result_ALL.txt"; //String output = "/home/lhfei/app_tmp/vdnlog/output/"; if (args == null || args.length != 2) { args = new String[] { input, output }; } FileUtil.fullyDelete(new File(output)); int exitCode = ToolRunner.run(new IPAreaLocalDriver(), args); System.exit(exitCode); } }