| /* |
| * 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.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.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.setComputationClass( |
| SimpleCheckpoint.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)); |
| } |
| } |