/*
* 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.aggregators;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import org.apache.giraph.BspCase;
import org.apache.giraph.comm.aggregators.AggregatorUtils;
import org.apache.giraph.conf.GiraphConfiguration;
import org.apache.giraph.conf.GiraphConstants;
import org.apache.giraph.examples.AggregatorsTestComputation;
import org.apache.giraph.examples.SimpleCheckpoint;
import org.apache.giraph.job.GiraphJob;
import org.apache.hadoop.fs.Path;
import org.junit.Test;
/** Tests if aggregators are handled on a proper way */
public class TestAggregatorsHandling extends BspCase {
public TestAggregatorsHandling() {
super(TestAggregatorsHandling.class.getName());
}
/** Tests if aggregators are handled on a proper way during supersteps */
@Test
public void testAggregatorsHandling() throws IOException,
ClassNotFoundException, InterruptedException {
GiraphConfiguration conf = new GiraphConfiguration();
conf.setComputationClass(AggregatorsTestComputation.class);
conf.setVertexInputFormatClass(
AggregatorsTestComputation.SimpleVertexInputFormat.class);
conf.setEdgeInputFormatClass(
AggregatorsTestComputation.SimpleEdgeInputFormat.class);
GiraphJob job = prepareJob(getCallingMethodName(), conf);
job.getConfiguration().setMasterComputeClass(
AggregatorsTestComputation.AggregatorsTestMasterCompute.class);
// test with aggregators split in a few requests
job.getConfiguration().setInt(
AggregatorUtils.MAX_BYTES_PER_AGGREGATOR_REQUEST, 50);
assertTrue(job.run(true));
}
/**
* Test if aggregators are are handled properly when restarting from a
* checkpoint
*/
@Test
public void testAggregatorsCheckpointing() throws ClassNotFoundException,
IOException, InterruptedException {
Path checkpointsDir = getTempPath("checkPointsForTesting");
Path outputPath = getTempPath(getCallingMethodName());
GiraphConfiguration conf = new GiraphConfiguration();
conf.setComputationClass(AggregatorsTestComputation.class);
conf.setMasterComputeClass(
AggregatorsTestComputation.AggregatorsTestMasterCompute.class);
conf.setVertexInputFormatClass(
AggregatorsTestComputation.SimpleVertexInputFormat.class);
conf.setEdgeInputFormatClass(
AggregatorsTestComputation.SimpleEdgeInputFormat.class);
GiraphJob job = prepareJob(getCallingMethodName(), conf, outputPath);
GiraphConfiguration configuration = job.getConfiguration();
GiraphConstants.CHECKPOINT_DIRECTORY.set(configuration, checkpointsDir.toString());
GiraphConstants.CLEANUP_CHECKPOINTS_AFTER_SUCCESS.set(configuration, false);
configuration.setCheckpointFrequency(4);
assertTrue(job.run(true));
// Restart the test from superstep 4
System.out.println("testAggregatorsCheckpointing: Restarting from " +
"superstep 4 with checkpoint path = " + checkpointsDir);
outputPath = getTempPath(getCallingMethodName() + "Restarted");
conf = new GiraphConfiguration();
conf.setComputationClass(AggregatorsTestComputation.class);
conf.setMasterComputeClass(
AggregatorsTestComputation.AggregatorsTestMasterCompute.class);
conf.setVertexInputFormatClass(
AggregatorsTestComputation.SimpleVertexInputFormat.class);
conf.setEdgeInputFormatClass(
AggregatorsTestComputation.SimpleEdgeInputFormat.class);
GiraphJob restartedJob = prepareJob(getCallingMethodName() + "Restarted",
conf, outputPath);
job.getConfiguration().setMasterComputeClass(
SimpleCheckpoint.SimpleCheckpointVertexMasterCompute.class);
GiraphConfiguration restartedJobConf = restartedJob.getConfiguration();
GiraphConstants.CHECKPOINT_DIRECTORY.set(restartedJobConf,
checkpointsDir.toString());
restartedJobConf.setLong(GiraphConstants.RESTART_SUPERSTEP, 4);
assertTrue(restartedJob.run(true));
}
}