| /* |
| * 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.tinkerpop.gremlin.spark.structure; |
| |
| import org.apache.commons.configuration2.BaseConfiguration; |
| import org.apache.commons.configuration2.Configuration; |
| import org.apache.spark.rdd.RDD; |
| import org.apache.tinkerpop.gremlin.TestHelper; |
| import org.apache.tinkerpop.gremlin.hadoop.Constants; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.HadoopGraph; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.gryo.GryoInputFormat; |
| import org.apache.tinkerpop.gremlin.process.computer.GraphComputer; |
| import org.apache.tinkerpop.gremlin.process.computer.ranking.pagerank.PageRankVertexProgram; |
| import org.apache.tinkerpop.gremlin.spark.AbstractSparkTest; |
| import org.apache.tinkerpop.gremlin.spark.process.computer.SparkGraphComputer; |
| import org.apache.tinkerpop.gremlin.spark.process.computer.SparkHadoopGraphProvider; |
| import org.apache.tinkerpop.gremlin.spark.structure.io.PersistedOutputRDD; |
| import org.apache.tinkerpop.gremlin.spark.structure.io.gryo.GryoSerializer; |
| import org.apache.tinkerpop.gremlin.structure.Graph; |
| import org.apache.tinkerpop.gremlin.structure.util.GraphFactory; |
| import org.junit.Test; |
| import scala.collection.JavaConversions; |
| |
| import java.io.File; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| public class SparkTest extends AbstractSparkTest { |
| |
| @Test |
| public void testSparkRDDPersistence() throws Exception { |
| final String prefix = TestHelper.makeTestDataFile(SparkTest.class, "testSparkRDDPersistence", "graphRDD-"); |
| final Configuration configuration = new BaseConfiguration(); |
| configuration.setProperty("spark.master", "local[4]"); |
| Spark.create(configuration); |
| |
| configuration.setProperty("spark.serializer", GryoSerializer.class.getCanonicalName()); |
| configuration.setProperty(Graph.GRAPH, HadoopGraph.class.getName()); |
| configuration.setProperty(Constants.GREMLIN_HADOOP_INPUT_LOCATION, SparkHadoopGraphProvider.PATHS.get("tinkerpop-modern-v3d0.kryo")); |
| configuration.setProperty(Constants.GREMLIN_HADOOP_GRAPH_READER, GryoInputFormat.class.getCanonicalName()); |
| configuration.setProperty(Constants.GREMLIN_HADOOP_GRAPH_WRITER, PersistedOutputRDD.class.getCanonicalName()); |
| configuration.setProperty(Constants.GREMLIN_HADOOP_JARS_IN_DISTRIBUTED_CACHE, false); |
| configuration.setProperty(Constants.GREMLIN_SPARK_PERSIST_CONTEXT, true); |
| |
| for (int i = 0; i < 10; i++) { |
| final String graphRDDName = Constants.getGraphLocation(prefix + i); |
| assertEquals(i, Spark.getRDDs().size()); |
| configuration.setProperty(Constants.GREMLIN_HADOOP_OUTPUT_LOCATION, prefix + i); |
| Graph graph = GraphFactory.open(configuration); |
| graph.compute(SparkGraphComputer.class).persist(GraphComputer.Persist.VERTEX_PROPERTIES).program(PageRankVertexProgram.build().iterations(1).create(graph)).submit().get(); |
| assertNotNull(Spark.getRDD(graphRDDName)); |
| assertEquals(i + 1, Spark.getRDDs().size()); |
| } |
| |
| for (int i = 9; i >= 0; i--) { |
| final String graphRDDName = Constants.getGraphLocation(prefix + i); |
| assertEquals(i + 1, getPersistedRDDSize()); |
| assertEquals(i + 1, Spark.getRDDs().size()); |
| assertTrue(hasPersistedRDD(graphRDDName)); |
| Spark.removeRDD(graphRDDName); |
| assertFalse(hasPersistedRDD(graphRDDName)); |
| } |
| |
| assertEquals(0, getPersistedRDDSize()); |
| assertEquals(0, Spark.getRDDs().size()); |
| Spark.close(); |
| } |
| |
| private static boolean hasPersistedRDD(final String name) { |
| for (final RDD<?> rdd : JavaConversions.asJavaIterable(Spark.getContext().persistentRdds().values())) { |
| if (null != rdd.name() && rdd.name().equals(name)) |
| return true; |
| } |
| return false; |
| } |
| |
| private static int getPersistedRDDSize() { |
| int counter = 0; |
| for (final RDD<?> rdd : JavaConversions.asJavaIterable(Spark.getContext().persistentRdds().values())) { |
| if (null != rdd.name()) |
| counter++; |
| } |
| return counter; |
| } |
| |
| } |