/*
* 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.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.Path;
import org.junit.Test;
import java.io.IOException;
import static org.junit.Assert.assertFalse;
/**
* Unit test for not enough map tasks
*/
public class TestNotEnoughMapTasks extends BspCase {
public TestNotEnoughMapTasks() {
super(TestNotEnoughMapTasks.class.getName());
}
/**
* This job should always fail gracefully with not enough map tasks.
*
* @throws IOException
* @throws ClassNotFoundException
* @throws InterruptedException
*/
@Test
public void testNotEnoughMapTasks()
throws IOException, InterruptedException, ClassNotFoundException {
if (!runningInDistributedMode()) {
System.out.println(
"testNotEnoughMapTasks: Ignore this test in local mode.");
return;
}
Path outputPath = getTempPath(getCallingMethodName());
GiraphConfiguration conf = new GiraphConfiguration();
conf.setVertexClass(
SimpleCheckpointVertex.SimpleCheckpointComputation.class);
conf.setVertexInputFormatClass(SimpleSuperstepVertexInputFormat.class);
conf.setVertexOutputFormatClass(SimpleSuperstepVertexOutputFormat.class);
GiraphJob job = prepareJob(getCallingMethodName(), conf, outputPath);
// An unlikely impossible number of workers to achieve
final int unlikelyWorkers = Short.MAX_VALUE;
job.getConfiguration().setWorkerConfiguration(unlikelyWorkers,
unlikelyWorkers,
100.0f);
// Only one poll attempt of one second to make failure faster
job.getConfiguration().setMaxMasterSuperstepWaitMsecs(1000);
job.getConfiguration().setEventWaitMsecs(1000);
assertFalse(job.run(false));
}
}