| /** |
| * 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.hadoop.mapred; |
| |
| import static org.junit.Assert.*; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.RawLocalFileSystem; |
| import org.apache.hadoop.mapreduce.MRConfig; |
| import org.junit.Test; |
| import org.junit.Before; |
| |
| /** |
| * Tests for the correct behavior of the TaskTracker starting up with |
| * respect to its local-disk directories. |
| */ |
| public class TestTaskTrackerDirectories { |
| private final String TEST_DIR = new File("build/test/testmapredlocaldir") |
| .getAbsolutePath(); |
| |
| @Before |
| public void deleteTestDir() throws IOException { |
| FileUtil.fullyDelete(new File(TEST_DIR)); |
| assertFalse("Could not delete " + TEST_DIR, |
| new File(TEST_DIR).exists()); |
| } |
| |
| @Test |
| public void testCreatesLocalDirs() throws Exception { |
| Configuration conf = new Configuration(); |
| String[] dirs = new String[] { |
| TEST_DIR + "/local1", |
| TEST_DIR + "/local2" |
| }; |
| |
| conf.setStrings(MRConfig.LOCAL_DIR, dirs); |
| setupTaskController(conf); |
| |
| for (String dir : dirs) { |
| checkDir(dir); |
| } |
| } |
| |
| @Test |
| public void testFixesLocalDirPermissions() throws Exception { |
| Configuration conf = new Configuration(); |
| String[] dirs = new String[] { |
| TEST_DIR + "/badperms" |
| }; |
| |
| new File(dirs[0]).mkdirs(); |
| FileUtil.chmod(dirs[0], "000"); |
| |
| conf.setStrings(MRConfig.LOCAL_DIR, dirs); |
| setupTaskController(conf); |
| |
| for (String dir : dirs) { |
| checkDir(dir); |
| } |
| } |
| |
| @Test |
| public void testCreatesLogDir() throws Exception { |
| File dir = TaskLog.getUserLogDir(); |
| FileUtil.fullyDelete(dir); |
| |
| setupTaskController(new Configuration()); |
| |
| checkDir(dir.getAbsolutePath()); |
| } |
| |
| /** |
| * If the log dir can't be created, the TT should fail to start since |
| * it will be unable to localize or run tasks. |
| */ |
| @Test |
| public void testCantCreateLogDir() throws Exception { |
| File dir = TaskLog.getUserLogDir(); |
| FileUtil.fullyDelete(dir); |
| assertTrue("Making file in place of log dir", |
| dir.createNewFile()); |
| |
| try { |
| setupTaskController(new Configuration()); |
| fail("Didn't throw!"); |
| } catch (IOException ioe) { |
| System.err.println("Got expected exception"); |
| ioe.printStackTrace(System.out); |
| } |
| } |
| |
| @Test |
| public void testFixesLogDirPermissions() throws Exception { |
| File dir = TaskLog.getUserLogDir(); |
| FileUtil.fullyDelete(dir); |
| dir.mkdirs(); |
| FileUtil.chmod(dir.getAbsolutePath(), "000"); |
| |
| setupTaskController(new Configuration()); |
| |
| checkDir(dir.getAbsolutePath()); |
| } |
| |
| private void setupTaskController(Configuration conf) throws IOException { |
| TaskController tc = new DefaultTaskController(); |
| tc.setConf(conf); |
| tc.setup(); |
| } |
| |
| private void checkDir(String dir) throws IOException { |
| FileSystem fs = RawLocalFileSystem.get(new Configuration()); |
| File f = new File(dir); |
| assertTrue(dir + "should exist", f.exists()); |
| FileStatus stat = fs.getFileStatus(new Path(dir)); |
| assertEquals(dir + " has correct permissions", |
| 0755, stat.getPermission().toShort()); |
| } |
| } |