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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.
*/
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
public class Test2 {
/*
* This submits a Map-Reduce job without using runJar, or the main method in WordCount.
*/
public static void main(String[] args) {
//this path is a HDFS path
Path inputPath = new Path("/file01.txt");
//this path is a HDFS path
Path outputPath = new Path("/output7");
org.apache.hadoop.examples.WordCount myCount = new org.apache.hadoop.examples.WordCount();
Configuration conf = new Configuration();
myCount.setConf(conf);
JobConf mapredConf = new JobConf(myCount.getConf(), org.apache.hadoop.examples.WordCount.class);
mapredConf.setJobName("wordcount");
// the keys are words (strings)
mapredConf.setOutputKeyClass(Text.class);
// the values are counts (ints)
mapredConf.setOutputValueClass(IntWritable.class);
mapredConf.setMapperClass(org.apache.hadoop.examples.WordCount.MapClass.class);
mapredConf.setCombinerClass(org.apache.hadoop.examples.WordCount.Reduce.class);
mapredConf.setReducerClass(org.apache.hadoop.examples.WordCount.Reduce.class);
mapredConf.setInputPath(inputPath);
mapredConf.setOutputPath(outputPath);
try {
JobClient.runJob(mapredConf);
}
catch(Exception e) {
System.out.println("ERROR: " + e);
}
}
}
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