[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.mapred; |
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| 19 | |
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| 20 | import junit.framework.TestCase; |
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| 21 | |
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| 22 | import org.apache.commons.logging.Log; |
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| 23 | import org.apache.commons.logging.LogFactory; |
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| 24 | import org.apache.hadoop.conf.Configuration; |
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| 25 | import org.apache.hadoop.fs.permission.FsPermission; |
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| 26 | import org.apache.hadoop.hdfs.MiniDFSCluster; |
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| 27 | import org.apache.hadoop.fs.FileSystem; |
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| 28 | import org.apache.hadoop.fs.Path; |
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| 29 | import org.apache.hadoop.security.*; |
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| 30 | |
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| 31 | /** |
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| 32 | * Test if JobTracker is resilient to garbage in mapred.system.dir. |
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| 33 | */ |
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| 34 | public class TestMapredSystemDir extends TestCase { |
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| 35 | private static final Log LOG = LogFactory.getLog(TestMapredSystemDir.class); |
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| 36 | |
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| 37 | // dfs ugi |
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| 38 | private static final UnixUserGroupInformation DFS_UGI = |
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| 39 | TestMiniMRWithDFSWithDistinctUsers.createUGI("dfs", true); |
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| 40 | // mapred ugi |
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| 41 | private static final UnixUserGroupInformation MR_UGI = |
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| 42 | TestMiniMRWithDFSWithDistinctUsers.createUGI("mr", false); |
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| 43 | private static final FsPermission SYSTEM_DIR_PERMISSION = |
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| 44 | FsPermission.createImmutable((short) 0733); // rwx-wx-wx |
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| 45 | |
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| 46 | public void testGarbledMapredSystemDir() throws Exception { |
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| 47 | MiniDFSCluster dfs = null; |
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| 48 | MiniMRCluster mr = null; |
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| 49 | try { |
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| 50 | // start dfs |
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| 51 | Configuration conf = new Configuration(); |
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| 52 | conf.set("dfs.permissions.supergroup", "supergroup"); |
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| 53 | UnixUserGroupInformation.saveToConf(conf, |
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| 54 | UnixUserGroupInformation.UGI_PROPERTY_NAME, DFS_UGI); |
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| 55 | dfs = new MiniDFSCluster(conf, 1, true, null); |
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| 56 | FileSystem fs = dfs.getFileSystem(); |
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| 57 | |
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| 58 | // create mapred.system.dir |
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| 59 | Path mapredSysDir = new Path("/mapred"); |
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| 60 | fs.mkdirs(mapredSysDir); |
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| 61 | fs.setPermission(mapredSysDir, new FsPermission(SYSTEM_DIR_PERMISSION)); |
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| 62 | fs.setOwner(mapredSysDir, "mr", "mrgroup"); |
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| 63 | |
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| 64 | // start mr (i.e jobtracker) |
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| 65 | Configuration mrConf = new Configuration(); |
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| 66 | UnixUserGroupInformation.saveToConf(mrConf, |
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| 67 | UnixUserGroupInformation.UGI_PROPERTY_NAME, MR_UGI); |
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| 68 | mr = new MiniMRCluster(0, 0, 0, dfs.getFileSystem().getUri().toString(), |
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| 69 | 1, null, null, MR_UGI, new JobConf(mrConf)); |
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| 70 | JobTracker jobtracker = mr.getJobTrackerRunner().getJobTracker(); |
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| 71 | |
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| 72 | // add garbage to mapred.system.dir |
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| 73 | Path garbage = new Path(jobtracker.getSystemDir(), "garbage"); |
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| 74 | fs.mkdirs(garbage); |
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| 75 | fs.setPermission(garbage, new FsPermission(SYSTEM_DIR_PERMISSION)); |
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| 76 | fs.setOwner(garbage, "test", "test-group"); |
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| 77 | |
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| 78 | // stop the jobtracker |
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| 79 | mr.stopJobTracker(); |
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| 80 | mr.getJobTrackerConf().setBoolean("mapred.jobtracker.restart.recover", |
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| 81 | false); |
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| 82 | // start jobtracker but dont wait for it to be up |
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| 83 | mr.startJobTracker(false); |
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| 84 | |
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| 85 | // check 5 times .. each time wait for 2 secs to check if the jobtracker |
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| 86 | // has crashed or not. |
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| 87 | for (int i = 0; i < 5; ++i) { |
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| 88 | LOG.info("Check #" + i); |
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| 89 | if (!mr.getJobTrackerRunner().isActive()) { |
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| 90 | return; |
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| 91 | } |
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| 92 | UtilsForTests.waitFor(2000); |
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| 93 | } |
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| 94 | |
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| 95 | assertFalse("JobTracker did not bail out (waited for 10 secs)", |
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| 96 | mr.getJobTrackerRunner().isActive()); |
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| 97 | } finally { |
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| 98 | if (dfs != null) { dfs.shutdown(); } |
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| 99 | if (mr != null) { mr.shutdown();} |
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| 100 | } |
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| 101 | } |
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| 102 | } |
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