/**
* 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 com.alimama.quanjingmonitor.kmeans;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.WritableComparable;
import org.apache.hadoop.mapreduce.Mapper;
public class KMeansGroupMapper extends Mapper<WritableComparable<?>, Text, Text, Cluster> {
ParseVector parse=new ParseVector();
@Override
protected void map(WritableComparable<?> key, Text point, Context context)
throws IOException, InterruptedException {
String line=point.toString();
Vector pointv=parse.parseVector(line);
pointv.setNumPoints(1);
Cluster clu=new Cluster(pointv,0);
context.write(new Text(String.valueOf(parse.parseKey(line))),clu);
}
@Override
protected void setup(Context context) throws IOException,
InterruptedException {
super.setup(context);
Configuration conf = context.getConfiguration();
parse.setup(conf);
}
}