/* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.mahout.clustering.kmeans;
import java.io.IOException;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.mahout.clustering.ClusterObservations;
public class KMeansCombiner extends Reducer<Text, ClusterObservations, Text, ClusterObservations> {
@Override
protected void reduce(Text key, Iterable<ClusterObservations> values, Context context)
throws IOException, InterruptedException {
Cluster cluster = new Cluster();
for (ClusterObservations value : values) {
cluster.observe(value);
}
context.write(key, cluster.getObservations());
}
}