| /* |
| * 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.giraph.graph.partition; |
| |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableComparable; |
| |
| /** |
| * Defines the partitioning framework for this application. |
| * |
| * @param <I> Vertex index value |
| * @param <V> Vertex value |
| * @param <E> Edge value |
| * @param <M> Message value |
| */ |
| @SuppressWarnings("rawtypes") |
| public interface GraphPartitionerFactory<I extends WritableComparable, |
| V extends Writable, E extends Writable, M extends Writable> { |
| /** |
| * Create the {@link MasterGraphPartitioner} used by the master. |
| * Instantiated once by the master and reused. |
| * |
| * @return Instantiated master graph partitioner |
| */ |
| MasterGraphPartitioner<I, V, E, M> createMasterGraphPartitioner(); |
| |
| /** |
| * Create the {@link WorkerGraphPartitioner} used by the worker. |
| * Instantiated once by every worker and reused. |
| * |
| * @return Instantiated worker graph partitioner |
| */ |
| WorkerGraphPartitioner<I, V, E, M> createWorkerGraphPartitioner(); |
| } |