1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * 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 and 16 * limitations under the License. 17 */ 18 19 package org.apache.giraph.partition; 20 21 import org.apache.giraph.conf.ImmutableClassesGiraphConfigurable; 22 import org.apache.giraph.worker.LocalData; 23 import org.apache.hadoop.io.Writable; 24 import org.apache.hadoop.io.WritableComparable; 25 26 /** 27 * Defines the partitioning framework for this application. 28 * 29 * @param <I> Vertex index value 30 * @param <V> Vertex value 31 * @param <E> Edge value 32 */ 33 @SuppressWarnings("rawtypes") 34 public interface GraphPartitionerFactoryInterface<I extends WritableComparable, 35 V extends Writable, E extends Writable> extends 36 ImmutableClassesGiraphConfigurable<I, V, E> { 37 38 /** 39 * Use some local data present in the worker 40 * 41 * @param localData localData present in the worker 42 */ 43 void initialize(LocalData<I, V, E, ? extends Writable> localData); 44 /** 45 * Create the {@link MasterGraphPartitioner} used by the master. 46 * Instantiated once by the master and reused. 47 * 48 * @return Instantiated master graph partitioner 49 */ 50 MasterGraphPartitioner<I, V, E> createMasterGraphPartitioner(); 51 52 /** 53 * Create the {@link WorkerGraphPartitioner} used by the worker. 54 * Instantiated once by every worker and reused. 55 * 56 * @return Instantiated worker graph partitioner 57 */ 58 WorkerGraphPartitioner<I, V, E> createWorkerGraphPartitioner(); 59 }