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.piece.interfaces; 19 20 import org.apache.giraph.writable.kryo.markers.NonKryoWritable; 21 22 /** 23 * Interface containing a single function - postprocess. 24 * 25 * Marked to not allow seriazliation, as it should be created on the worker, 26 * so should never be serialiized, disallow only for catching problems early. 27 */ 28 public interface VertexPostprocessor extends NonKryoWritable { 29 /** 30 * Override to finish computation. This method is executed exactly once 31 * after computation for all vertices in the partition is complete. 32 */ 33 void postprocess(); 34 }