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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
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* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.giraph;
import org.apache.giraph.conf.GiraphConfiguration;
import org.apache.giraph.conf.GiraphConstants;
import org.apache.giraph.examples.SimpleCheckpointVertex;
import org.apache.giraph.examples.SimpleSuperstepVertex.SimpleSuperstepVertexInputFormat;
import org.apache.giraph.examples.SimpleSuperstepVertex.SimpleSuperstepVertexOutputFormat;
import org.apache.giraph.job.GiraphJob;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.Path;
import org.junit.Test;
import java.io.IOException;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Unit test for manual checkpoint restarting
*/
public class TestManualCheckpoint extends BspCase {
public TestManualCheckpoint() {
super(TestManualCheckpoint.class.getName());
}
/**
* Run a sample BSP job locally and test checkpointing.
* @throws IOException
* @throws ClassNotFoundException
* @throws InterruptedException
*/
@Test
public void testBspCheckpoint()
throws IOException, InterruptedException, ClassNotFoundException {
Path checkpointsDir = getTempPath("checkPointsForTesting");
Path outputPath = getTempPath(getCallingMethodName());
GiraphConfiguration conf = new GiraphConfiguration();
conf.setVertexClass(
SimpleCheckpointVertex.SimpleCheckpointComputation.class);
conf.setWorkerContextClass(
SimpleCheckpointVertex.SimpleCheckpointVertexWorkerContext.class);
conf.setMasterComputeClass(
SimpleCheckpointVertex.SimpleCheckpointVertexMasterCompute.class);
conf.setVertexInputFormatClass(SimpleSuperstepVertexInputFormat.class);
conf.setVertexOutputFormatClass(SimpleSuperstepVertexOutputFormat.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(2);
assertTrue(job.run(true));
long idSum = 0;
if (!runningInDistributedMode()) {
FileStatus fileStatus = getSinglePartFileStatus(job.getConfiguration(),
outputPath);
idSum = SimpleCheckpointVertex.SimpleCheckpointVertexWorkerContext
.getFinalSum();
System.out.println("testBspCheckpoint: idSum = " + idSum +
" fileLen = " + fileStatus.getLen());
}
// Restart the test from superstep 2
System.out.println("testBspCheckpoint: Restarting from superstep 2" +
" with checkpoint path = " + checkpointsDir);
outputPath = getTempPath(getCallingMethodName() + "Restarted");
conf = new GiraphConfiguration();
conf.setVertexClass(
SimpleCheckpointVertex.SimpleCheckpointComputation.class);
conf.setWorkerContextClass(
SimpleCheckpointVertex.SimpleCheckpointVertexWorkerContext.class);
conf.setMasterComputeClass(
SimpleCheckpointVertex.SimpleCheckpointVertexMasterCompute.class);
conf.setVertexInputFormatClass(SimpleSuperstepVertexInputFormat.class);
conf.setVertexOutputFormatClass(SimpleSuperstepVertexOutputFormat.class);
GiraphJob restartedJob = prepareJob(getCallingMethodName() + "Restarted",
conf, outputPath);
configuration.setMasterComputeClass(
SimpleCheckpointVertex.SimpleCheckpointVertexMasterCompute.class);
GiraphConstants.CHECKPOINT_DIRECTORY.set(restartedJob.getConfiguration(),
checkpointsDir.toString());
assertTrue(restartedJob.run(true));
if (!runningInDistributedMode()) {
long idSumRestarted =
SimpleCheckpointVertex.SimpleCheckpointVertexWorkerContext
.getFinalSum();
System.out.println("testBspCheckpoint: idSumRestarted = " +
idSumRestarted);
assertEquals(idSum, idSumRestarted);
}
}
}