/*
* 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;
import org.apache.giraph.conf.GiraphConfiguration;
import org.apache.giraph.conf.GiraphConstants;
import org.apache.giraph.examples.SimpleCheckpoint;
import org.apache.giraph.examples.SimpleSuperstepComputation.SimpleSuperstepVertexInputFormat;
import org.apache.giraph.examples.SimpleSuperstepComputation.SimpleSuperstepVertexOutputFormat;
import org.apache.giraph.job.GiraphJob;
import org.apache.hadoop.fs.Path;
import org.junit.Test;
import java.io.IOException;
import static org.junit.Assert.assertTrue;
/**
* Unit test for automated checkpoint restarting
*/
public class TestAutoCheckpoint extends BspCase {
public TestAutoCheckpoint() {
super(TestAutoCheckpoint.class.getName());
}
/**
* Run a job that requires checkpointing and will have a worker crash
* and still recover from a previous checkpoint.
*
* @throws IOException
* @throws ClassNotFoundException
* @throws InterruptedException
*/
@Test
public void testSingleFault()
throws IOException, InterruptedException, ClassNotFoundException {
if (!runningInDistributedMode()) {
System.out.println(
"testSingleFault: Ignore this test in local mode.");
return;
}
Path outputPath = getTempPath(getCallingMethodName());
GiraphConfiguration conf = new GiraphConfiguration();
conf.setComputationClass(
SimpleCheckpoint.SimpleCheckpointComputation.class);
conf.setWorkerContextClass(
SimpleCheckpoint.SimpleCheckpointVertexWorkerContext.class);
conf.setMasterComputeClass(
SimpleCheckpoint.SimpleCheckpointVertexMasterCompute.class);
conf.setVertexInputFormatClass(SimpleSuperstepVertexInputFormat.class);
conf.setVertexOutputFormatClass(SimpleSuperstepVertexOutputFormat.class);
conf.setBoolean(SimpleCheckpoint.ENABLE_FAULT, true);
conf.setInt("mapred.map.max.attempts", 4);
// Trigger failure faster
conf.setInt("mapred.task.timeout", 10000);
conf.setMaxMasterSuperstepWaitMsecs(10000);
conf.setEventWaitMsecs(1000);
conf.setCheckpointFrequency(2);
GiraphConstants.CHECKPOINT_DIRECTORY.set(conf,
getTempPath("_singleFaultCheckpoints").toString());
GiraphConstants.CLEANUP_CHECKPOINTS_AFTER_SUCCESS.set(conf, false);
GiraphConstants.ZOOKEEPER_SESSION_TIMEOUT.set(conf, 10000);
GiraphConstants.ZOOKEEPER_MIN_SESSION_TIMEOUT.set(conf, 10000);
GiraphJob job = prepareJob(getCallingMethodName(), conf, outputPath);
assertTrue(job.run(true));
}
}