Merge -c 1391649 from trunk to branch-2.0.2-alpha to fix YARN-106. Nodemanager needs to set permissions of local directories. Contributed by Jason Lowe.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.0.2-alpha@1391939 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -70,6 +70,9 @@ Release 0.23.4 - UNRELEASED
     YARN-88. DefaultContainerExecutor can fail to set proper permissions.
     (Jason Lowe via sseth)
 
+    YARN-106. Nodemanager needs to set permissions of local directories (jlowe
+    via bobby)
+
 Release 0.23.3 - Unreleased 
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/DirectoryCollection.java

@@ -19,12 +19,17 @@
 package org.apache.hadoop.yarn.server.nodemanager;
 
 import java.io.File;
-import java.util.concurrent.CopyOnWriteArrayList;
+import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.fs.FileContext;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.util.DiskChecker;
 import org.apache.hadoop.util.DiskChecker.DiskErrorException;
 
@@ -65,6 +70,31 @@ class DirectoryCollection {
     return numFailures;
   }
 
+  /**
+   * Create any non-existent directories and parent directories, updating the
+   * list of valid directories if necessary.
+   * @param localFs local file system to use
+   * @param perm absolute permissions to use for any directories created
+   * @return true if there were no errors, false if at least one error occurred
+   */
+  synchronized boolean createNonExistentDirs(FileContext localFs,
+      FsPermission perm) {
+    boolean failed = false;
+    for (final String dir : localDirs) {
+      try {
+        createDir(localFs, new Path(dir), perm);
+      } catch (IOException e) {
+        LOG.warn("Unable to create directory " + dir + " error " +
+            e.getMessage() + ", removing from the list of valid directories.");
+        localDirs.remove(dir);
+        failedDirs.add(dir);
+        numFailures++;
+        failed = true;
+      }
+    }
+    return !failed;
+  }
+
   /**
    * Check the health of current set of local directories, updating the list
    * of valid directories if necessary.
@@ -86,4 +116,20 @@ class DirectoryCollection {
     }
     return numFailures > oldNumFailures;
   }
+
+  private void createDir(FileContext localFs, Path dir, FsPermission perm)
+      throws IOException {
+    if (dir == null) {
+      return;
+    }
+    try {
+      localFs.getFileStatus(dir);
+    } catch (FileNotFoundException e) {
+      createDir(localFs, dir.getParent(), perm);
+      localFs.mkdir(dir, perm, false);
+      if (!perm.equals(perm.applyUMask(localFs.getUMask()))) {
+        localFs.setPermission(dir, perm);
+      }
+    }
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/LocalDirsHandlerService.java

@@ -26,9 +26,12 @@ import java.util.TimerTask;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileContext;
 import org.apache.hadoop.fs.LocalDirAllocator;
 import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
 import org.apache.hadoop.util.StringUtils;
+import org.apache.hadoop.yarn.YarnException;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.service.AbstractService;
 
@@ -120,6 +123,19 @@ public class LocalDirsHandlerService extends AbstractService {
     lastDisksCheckTime = System.currentTimeMillis();
     super.init(conf);
 
+    FileContext localFs;
+    try {
+      localFs = FileContext.getLocalFSFileContext(config);
+    } catch (IOException e) {
+      throw new YarnException("Unable to get the local filesystem", e);
+    }
+    FsPermission perm = new FsPermission((short)0755);
+    boolean createSucceeded = localDirs.createNonExistentDirs(localFs, perm);
+    createSucceeded &= logDirs.createNonExistentDirs(localFs, perm);
+    if (!createSucceeded) {
+      updateDirsAfterFailure();
+    }
+
     // Check the disk health immediately to weed out bad directories
     // before other init code attempts to use them.
     checkDirs();
@@ -229,7 +245,8 @@ public class LocalDirsHandlerService extends AbstractService {
    * Set good local dirs and good log dirs in the configuration so that the
    * LocalDirAllocator objects will use this updated configuration only.
    */
-  private void updateDirsInConfiguration() {
+  private void updateDirsAfterFailure() {
+    LOG.info("Disk(s) failed. " + getDisksHealthReport());
     Configuration conf = getConfig();
     List<String> localDirs = getLocalDirs();
     conf.setStrings(YarnConfiguration.NM_LOCAL_DIRS,
@@ -237,6 +254,10 @@ public class LocalDirsHandlerService extends AbstractService {
     List<String> logDirs = getLogDirs();
     conf.setStrings(YarnConfiguration.NM_LOG_DIRS,
                       logDirs.toArray(new String[logDirs.size()]));
+    if (!areDisksHealthy()) {
+      // Just log.
+      LOG.error("Most of the disks failed. " + getDisksHealthReport());
+    }
   }
 
   private void checkDirs() {
@@ -249,12 +270,7 @@ public class LocalDirsHandlerService extends AbstractService {
       }
 
       if (newFailure) {
-        LOG.info("Disk(s) failed. " + getDisksHealthReport());
-        updateDirsInConfiguration();
-        if (!areDisksHealthy()) {
-          // Just log.
-          LOG.error("Most of the disks failed. " + getDisksHealthReport());
-        }
+        updateDirsAfterFailure();
       }
       lastDisksCheckTime = System.currentTimeMillis();
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/TestDirectoryCollection.java

@@ -23,7 +23,13 @@ import java.io.IOException;
 import java.util.List;
 import java.util.ListIterator;
 
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.CommonConfigurationKeys;
+import org.apache.hadoop.fs.FileContext;
+import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileUtil;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
 import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.BeforeClass;
@@ -65,4 +71,37 @@ public class TestDirectoryCollection {
     // Verify no ConcurrentModification is thrown
     li.next();
   }
+
+  @Test
+  public void testCreateDirectories() throws IOException {
+    Configuration conf = new Configuration();
+    conf.set(CommonConfigurationKeys.FS_PERMISSIONS_UMASK_KEY, "077");
+    FileContext localFs = FileContext.getLocalFSFileContext(conf);
+
+    String dirA = new File(testDir, "dirA").getPath();
+    String dirB = new File(dirA, "dirB").getPath();
+    String dirC = new File(testDir, "dirC").getPath();
+    Path pathC = new Path(dirC);
+    FsPermission permDirC = new FsPermission((short)0710);
+
+    localFs.mkdir(pathC, null, true);
+    localFs.setPermission(pathC, permDirC);
+
+    String[] dirs = { dirA, dirB, dirC };
+    DirectoryCollection dc = new DirectoryCollection(dirs);
+    FsPermission defaultPerm = FsPermission.getDefault()
+        .applyUMask(new FsPermission((short)FsPermission.DEFAULT_UMASK));
+    boolean createResult = dc.createNonExistentDirs(localFs, defaultPerm);
+    Assert.assertTrue(createResult);
+
+    FileStatus status = localFs.getFileStatus(new Path(dirA));
+    Assert.assertEquals("local dir parent not created with proper permissions",
+        defaultPerm, status.getPermission());
+    status = localFs.getFileStatus(new Path(dirB));
+    Assert.assertEquals("local dir not created with proper permissions",
+        defaultPerm, status.getPermission());
+    status = localFs.getFileStatus(pathC);
+    Assert.assertEquals("existing local directory permissions modified",
+        permDirC, status.getPermission());
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/webapp/TestContainerLogsPage.java

@@ -43,8 +43,9 @@ public class TestContainerLogsPage {
 
   @Test
   public void testContainerLogDirs() throws IOException {
-    String logdirwithFile = "file:///target/"
-        + TestNMWebServer.class.getSimpleName() + "LogDir";
+    String absLogDir = new File("target",
+        TestNMWebServer.class.getSimpleName() + "LogDir").getAbsolutePath();
+    String logdirwithFile = "file://" + absLogDir;
     Configuration conf = new Configuration();
     conf.set(YarnConfiguration.NM_LOG_DIRS, logdirwithFile);
     NodeHealthCheckerService healthChecker = new NodeHealthCheckerService();