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Last active August 29, 2015 14:06
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windows下,直接对mapreduce程度打包jar,然后提交给resourcemanager执行的主程序的父类。
import java.io.IOException;
import java.util.StringTokenizer;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.MRJobConfig;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 本地Windows提交任务到集群Linux
*
* 打包mapreduce的程序为jar后,直接运行main方法进行提交。
*/
public class HelloSubmitMR extends WindowsClientSubmitExt {
public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
new HelloSubmitMR().execute(args);
}
public void execute(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
Configuration conf = new Configuration();
String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
if (otherArgs.length != 2) {
otherArgs = new String[] { "/tmp/bugtest", "/tmp/bugtest-out12345" };
}
execute(conf, otherArgs[0], otherArgs[1]);
}
public void execute(Configuration conf, String in, String out) throws IOException, ClassNotFoundException,
InterruptedException {
// del out
FileSystem fs = FileSystem.get(conf);
fs.delete(new Path(out), true);
// job
Job job = Job.getInstance(conf, "word count");
// 程序打包的路径
job.setJar(getJarPath());
// job.setJarByClass(HelloMR.class);
job.setMapperClass(HelloMapper.class);
job.setCombinerClass(HelloReduce.class);
job.setReducerClass(HelloReduce.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(IntWritable.class);
setting(job);
FileInputFormat.addInputPath(job, new Path(in));
FileOutputFormat.setOutputPath(job, new Path(out));
System.exit(job.waitForCompletion(true) ? 0 : 1);
}
protected void setting(Job job) {
// job.setMaxMapAttempts(1);
job.setNumReduceTasks(1);
job.getConfiguration().setInt(MRJobConfig.NUM_MAPS, 1);
};
protected String getJarPath() {
return "test-jar/helloMR.jar";
}
static class HelloMapper extends Mapper<LongWritable, Text, Text, IntWritable> {
private final static IntWritable one = new IntWritable(1);
private Text word = new Text();
@Override
protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
StringTokenizer itr = new StringTokenizer(value.toString());
while (itr.hasMoreTokens()) {
word.set(itr.nextToken());
context.write(word, one);
}
}
}
static class HelloReduce extends Reducer<Text, IntWritable, Text, IntWritable> {
private static Logger LOG = LoggerFactory.getLogger("Hello Reduce");
private IntWritable result = new IntWritable();
@Override
protected void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException,
InterruptedException {
LOG.info("key : " + key);
int sum = 0;
for (IntWritable val : values) {
LOG.info("对象hash: " + val);
sum += val.get();
}
result.set(sum);
context.write(key, result);
}
}
}
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapreduce.util.ConfigUtil;
public class WindowsClientSubmitExt {
static {
// genPackage();
System.setProperty("HADOOP_USER_NAME", "hadoop");
// System.setProperty("hadoop.home.dir",
// "E:/local/libs/big/hadoop-2.2.0");
// 先加载mapreduce的配置
ConfigUtil.loadResources();
Configuration.addDefaultResource("analyser-test-site.xml");
}
// private static void genPackage() {
// File file = new File("windows-debug-package.xml"); // 文件名任意,只要能找到就可以
// Project project = new Project();
//
// DefaultLogger consoleLogger = new DefaultLogger();
// consoleLogger.setErrorPrintStream(System.err);
// consoleLogger.setOutputPrintStream(System.out);
// consoleLogger.setMessageOutputLevel(Project.MSG_INFO);
// project.addBuildListener(consoleLogger);
//
// project.fireBuildStarted();
// project.init();
// ProjectHelper projectHelper = ProjectHelper.getProjectHelper();
// projectHelper.parse(project, file);
// project.executeTarget(project.getDefaultTarget());
// project.fireBuildFinished(null);
// project.log("生成任务jar成功!");
// }
}
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