1/*2 * Licensed to the Apache Software Foundation (ASF) under one3 * or more contributor license agreements. See the NOTICE file4 * distributed with this work for additional information5 * regarding copyright ownership. The ASF licenses this file6 * to you under the Apache License, Version 2.0 (the7 * "License"); you may not use this file except in compliance8 * with the License. You may obtain a copy of the License at9 *10 * http://www.apache.org/licenses/LICENSE-2.011 *12 * Unless required by applicable law or agreed to in writing, software13 * distributed under the License is distributed on an "AS IS" BASIS,14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.15 * See the License for the specific language governing permissions and16 * limitations under the License.17 */1819package org.apache.giraph.combiner;
2021import org.apache.hadoop.io.IntWritable;
22import org.apache.hadoop.io.WritableComparable;
2324/**25 * {@link MessageCombiner} that finds the minimum {@link IntWritable}26 */27publicclassMinimumIntMessageCombiner28implements MessageCombiner<WritableComparable, IntWritable> {
29 @Override
30publicvoid combine(WritableComparable vertexIndex,
31 IntWritable originalMessage, IntWritable messageToCombine) {
32if (originalMessage.get() > messageToCombine.get()) {
33 originalMessage.set(messageToCombine.get());
34 }
35 }
3637 @Override
38public IntWritable createInitialMessage() {
39returnnew IntWritable(Integer.MAX_VALUE);
40 }
41 }