| /** |
| * 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.fs.slive; |
| |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.Partitioner; |
| |
| /** |
| * The partitioner partitions the map output according to the operation type. |
| * The partition number is the hash of the operation type modular the total |
| * number of the reducers. |
| */ |
| @SuppressWarnings("deprecation") |
| public class SlivePartitioner implements Partitioner<Text, Text> { |
| @Override // JobConfigurable |
| public void configure(JobConf conf) {} |
| |
| @Override // Partitioner |
| public int getPartition(Text key, Text value, int numPartitions) { |
| OperationOutput oo = new OperationOutput(key, value); |
| return oo.getOperationType().hashCode() % numPartitions; |
| } |
| } |