| /* |
| * 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.examples; |
| |
| import org.apache.giraph.BspCase; |
| import org.apache.giraph.conf.GiraphConfiguration; |
| import org.apache.giraph.conf.GiraphConstants; |
| import org.apache.giraph.job.GiraphJob; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Test page rank (with and without multithreading) |
| */ |
| public class TestPageRank extends BspCase { |
| |
| /** |
| * Constructor |
| */ |
| public TestPageRank() { |
| super(TestPageRank.class.getName()); |
| } |
| |
| @Test |
| public void testBspPageRankSingleCompute() |
| throws ClassNotFoundException, IOException, InterruptedException { |
| testPageRank(1); |
| } |
| |
| |
| @Test |
| public void testPageRankTenThreadsCompute() |
| throws ClassNotFoundException, IOException, InterruptedException { |
| testPageRank(10); |
| } |
| |
| /** |
| * Generic page rank test |
| * |
| * @param numComputeThreads Number of compute threads to use |
| * @throws java.io.IOException |
| * @throws ClassNotFoundException |
| * @throws InterruptedException |
| */ |
| private void testPageRank(int numComputeThreads) |
| throws IOException, InterruptedException, ClassNotFoundException { |
| GiraphConfiguration conf = new GiraphConfiguration(); |
| conf.setVertexClass(SimplePageRankVertex.class); |
| conf.setVertexInputFormatClass( |
| SimplePageRankVertex.SimplePageRankVertexInputFormat.class); |
| conf.setWorkerContextClass( |
| SimplePageRankVertex.SimplePageRankVertexWorkerContext.class); |
| conf.setMasterComputeClass( |
| SimplePageRankVertex.SimplePageRankVertexMasterCompute.class); |
| conf.setNumComputeThreads(numComputeThreads); |
| // Set enough partitions to generate randomness on the compute side |
| if (numComputeThreads != 1) { |
| GiraphConstants.USER_PARTITION_COUNT.set(conf, numComputeThreads * 5); |
| } |
| GiraphJob job = prepareJob(getCallingMethodName(), conf); |
| assertTrue(job.run(true)); |
| if (!runningInDistributedMode()) { |
| double maxPageRank = |
| SimplePageRankVertex.SimplePageRankVertexWorkerContext.getFinalMax(); |
| double minPageRank = |
| SimplePageRankVertex.SimplePageRankVertexWorkerContext.getFinalMin(); |
| long numVertices = |
| SimplePageRankVertex.SimplePageRankVertexWorkerContext.getFinalSum(); |
| System.out.println(getCallingMethodName() + ": maxPageRank=" + |
| maxPageRank + " minPageRank=" + |
| minPageRank + " numVertices=" + numVertices + ", " + |
| " numComputeThreads=" + numComputeThreads); |
| assertEquals(34.03, maxPageRank, 0.001); |
| assertEquals(0.03, minPageRank, 0.00001); |
| assertEquals(5L, numVertices); |
| } |
| } |
| } |