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 package org.apache.giraph.block_app.framework.api; 19 20 /** 21 * Basic block computation API for accessing items 22 * present on both workers and master. 23 */ 24 public interface BlockApi extends BlockConfApi { 25 /** 26 * Get number of workers 27 * 28 * @return Number of workers 29 */ 30 int getWorkerCount(); 31 32 /** 33 * Get the total (all workers) number of vertices that 34 * existed at the start of the current piece. 35 * 36 * Recommended to avoid it, as it introduces global dependencies, 37 * code will not be able to work on top of a subgraphs any more. 38 * This number should be easily computable via reducer or aggregator. 39 */ 40 @Deprecated 41 long getTotalNumVertices(); 42 43 /** 44 * Get the total (all workers) number of edges that 45 * existed at the start of the current piece. 46 * 47 * Recommended to avoid it, as it introduces global dependencies, 48 * code will not be able to work on top of a subgraphs any more. 49 * This number should be easily computable via reducer or aggregator. 50 */ 51 @Deprecated 52 long getTotalNumEdges(); 53 }