| /** |
| * 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 org.apache.hadoop.mapred.lib; |
| |
| import org.apache.hadoop.mapred.Partitioner; |
| import org.apache.hadoop.mapred.JobConf; |
| |
| /** Partition keys by their {@link Object#hashCode()}. |
| * @deprecated Use |
| * {@link org.apache.hadoop.mapreduce.lib.partition.HashPartitioner} instead. |
| */ |
| @Deprecated |
| public class HashPartitioner<K2, V2> implements Partitioner<K2, V2> { |
| |
| public void configure(JobConf job) {} |
| |
| /** Use {@link Object#hashCode()} to partition. */ |
| public int getPartition(K2 key, V2 value, |
| int numReduceTasks) { |
| return (key.hashCode() & Integer.MAX_VALUE) % numReduceTasks; |
| } |
| |
| } |
