| /** |
| * 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.crunch.io; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| public class SequentialFileNamingSchemeTest { |
| |
| // The partition id used for testing. This partition id should be ignored by |
| // the SequentialFileNamingScheme. |
| private static final int PARTITION_ID = 42; |
| |
| private SequentialFileNamingScheme namingScheme; |
| private Configuration configuration; |
| |
| @Rule |
| public TemporaryFolder tmpOutputDir = new TemporaryFolder(); |
| |
| @Before |
| public void setUp() throws IOException { |
| configuration = new Configuration(); |
| namingScheme = SequentialFileNamingScheme.getInstance(); |
| } |
| |
| @Test |
| public void testGetMapOutputName_EmptyDirectory() throws IOException { |
| assertEquals("part-m-00000", |
| namingScheme.getMapOutputName(configuration, new Path(tmpOutputDir.getRoot().getAbsolutePath()))); |
| } |
| |
| @Test |
| public void testGetMapOutputName_NonEmptyDirectory() throws IOException { |
| File outputDirectory = tmpOutputDir.getRoot(); |
| |
| new File(outputDirectory, "existing-1").createNewFile(); |
| new File(outputDirectory, "existing-2").createNewFile(); |
| |
| assertEquals("part-m-00002", |
| namingScheme.getMapOutputName(configuration, new Path(outputDirectory.getAbsolutePath()))); |
| } |
| |
| @Test |
| public void testGetReduceOutputName_EmptyDirectory() throws IOException { |
| assertEquals("part-r-00000", namingScheme.getReduceOutputName(configuration, new Path(tmpOutputDir.getRoot() |
| .getAbsolutePath()), PARTITION_ID)); |
| } |
| |
| @Test |
| public void testGetReduceOutputName_NonEmptyDirectory() throws IOException { |
| File outputDirectory = tmpOutputDir.getRoot(); |
| |
| new File(outputDirectory, "existing-1").createNewFile(); |
| new File(outputDirectory, "existing-2").createNewFile(); |
| |
| assertEquals("part-r-00002", |
| namingScheme.getReduceOutputName(configuration, new Path(outputDirectory.getAbsolutePath()), PARTITION_ID)); |
| } |
| |
| } |