Merge trunk into HA branch.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-1623@1244645 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -169,6 +169,10 @@ Release 0.23.2 - UNRELEASED
     HADOOP-8071. Avoid an extra packet in client code when nagling is
     disabled. (todd)
 
+    HADOOP-6502. Improve the performance of Configuration.getClassByName when
+    the class is not found by caching negative results.
+    (sharad, todd via todd)
+
   BUG FIXES
 
     HADOOP-8042  When copying a file out of HDFS, modifying it, and uploading

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java

@@ -1146,6 +1146,22 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
    * @throws ClassNotFoundException if the class is not found.
    */
   public Class<?> getClassByName(String name) throws ClassNotFoundException {
+    Class<?> ret = getClassByNameOrNull(name);
+    if (ret == null) {
+      throw new ClassNotFoundException("Class " + name + " not found");
+    }
+    return ret;
+  }
+  
+  /**
+   * Load a class by name, returning null rather than throwing an exception
+   * if it couldn't be loaded. This is to avoid the overhead of creating
+   * an exception.
+   * 
+   * @param name the class name
+   * @return the class object, or null if it could not be found.
+   */
+  public Class<?> getClassByNameOrNull(String name) {
     Map<String, Class<?>> map;
     
     synchronized (CACHE_CLASSES) {
@@ -1157,12 +1173,20 @@ public class Configuration implements Iterable<Map.Entry<String,String>>,
       }
     }
 
-    Class<?> clazz = map.get(name);
+    Class<?> clazz = null;
-    if (clazz == null) {
+    if (!map.containsKey(name)) {
+      try {
         clazz = Class.forName(name, true, classLoader);
-      if (clazz != null) {
+      } catch (ClassNotFoundException e) {
+        map.put(name, null); //cache negative that class is not found
+        return null;
+      }
       // two putters can race here, but they'll put the same class
       map.put(name, clazz);
+    } else { // check already performed on this class name
+      clazz = map.get(name);
+      if (clazz == null) { // found the negative
+        return null;
       }
     }
 

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ReflectionUtils.java

@@ -86,17 +86,22 @@ public class ReflectionUtils {
     //invoke configure on theObject
     try {
       Class<?> jobConfClass = 
-        conf.getClassByName("org.apache.hadoop.mapred.JobConf");
+        conf.getClassByNameOrNull("org.apache.hadoop.mapred.JobConf");
+      if (jobConfClass == null) {
+        return;
+      }
+      
       Class<?> jobConfigurableClass = 
-        conf.getClassByName("org.apache.hadoop.mapred.JobConfigurable");
+        conf.getClassByNameOrNull("org.apache.hadoop.mapred.JobConfigurable");
+      if (jobConfigurableClass == null) {
+        return;
+      }
       if (jobConfClass.isAssignableFrom(conf.getClass()) &&
             jobConfigurableClass.isAssignableFrom(theObject.getClass())) {
         Method configureMethod = 
           jobConfigurableClass.getMethod("configure", jobConfClass);
         configureMethod.invoke(theObject, conf);
       }
-    } catch (ClassNotFoundException e) {
-      //JobConf/JobConfigurable not in classpath. no need to configure
     } catch (Exception e) {
       throw new RuntimeException("Error in configuring object", e);
     }

hadoop-common-project/hadoop-common/src/main/resources/core-default.xml

@@ -216,6 +216,13 @@
   determine the host, port, etc. for a filesystem.</description>
 </property>
 
+<property>
+  <name>fs.default.name</name>
+  <value>file:///</value>
+  <description>Deprecated. Use (fs.defaultFS) property
+  instead</description>
+</property>
+
 <property>
   <name>fs.trash.interval</name>
   <value>0</value>

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -210,6 +210,9 @@ Trunk (unreleased changes)
     dfs.client.block.write.replace-datanode-on-failure.enable to be mistakenly
     disabled. (atm)
 
+    HDFS-2525. Race between BlockPoolSliceScanner and append. (Brandon Li
+    via jitendra)
+
 Release 0.23.2 - UNRELEASED 
 
   INCOMPATIBLE CHANGES
@@ -245,6 +248,9 @@ Release 0.23.2 - UNRELEASED
     HDFS-2815. Namenode sometimes oes not come out of safemode during 
     NN crash + restart. (Uma Maheswara Rao via suresh)
 
+    HDFS-2950. Secondary NN HTTPS address should be listed as a
+    NAMESERVICE_SPECIFIC_KEY. (todd)
+
 Release 0.23.1 - 2012-02-08 
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java

@@ -99,6 +99,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
   public static final int     DFS_NAMENODE_SAFEMODE_MIN_DATANODES_DEFAULT = 0;
   public static final String  DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY = "dfs.namenode.secondary.http-address";
   public static final String  DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_DEFAULT = "0.0.0.0:50090";
+  public static final String  DFS_NAMENODE_SECONDARY_HTTPS_PORT_KEY = "dfs.namenode.secondary.https-port";
+  public static final int     DFS_NAMENODE_SECONDARY_HTTPS_PORT_DEFAULT = 50490;
   public static final String  DFS_NAMENODE_CHECKPOINT_CHECK_PERIOD_KEY = "dfs.namenode.checkpoint.check.period";
   public static final long    DFS_NAMENODE_CHECKPOINT_CHECK_PERIOD_DEFAULT = 60;
   public static final String  DFS_NAMENODE_CHECKPOINT_PERIOD_KEY = "dfs.namenode.checkpoint.period";

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/HdfsConfiguration.java

@@ -81,6 +81,7 @@ public class HdfsConfiguration extends Configuration {
     deprecate("dfs.safemode.extension", DFSConfigKeys.DFS_NAMENODE_SAFEMODE_EXTENSION_KEY);
     deprecate("dfs.safemode.threshold.pct", DFSConfigKeys.DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_KEY);
     deprecate("dfs.secondary.http.address", DFSConfigKeys.DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY);
+    deprecate("dfs.secondary.https.port", DFSConfigKeys.DFS_NAMENODE_SECONDARY_HTTPS_PORT_KEY);
     deprecate("dfs.socket.timeout", DFSConfigKeys.DFS_CLIENT_SOCKET_TIMEOUT_KEY);
     deprecate("fs.checkpoint.dir", DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_DIR_KEY);
     deprecate("fs.checkpoint.edits.dir", DFSConfigKeys.DFS_NAMENODE_CHECKPOINT_EDITS_DIR_KEY);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceScanner.java

@@ -51,11 +51,8 @@ import org.apache.hadoop.hdfs.util.DataTransferThrottler;
 import org.apache.hadoop.io.IOUtils;
 
 /**
- * Performs two types of scanning:
+ * Scans the block files under a block pool and verifies that the
- * <li> Gets block files from the data directories and reconciles the
+ * files are not corrupt.
- * difference between the blocks on the disk and in memory.</li>
- * <li> Scans the data directories for block files under a block pool
- * and verifies that the files are not corrupt</li>
  * This keeps track of blocks and their last verification times.
  * Currently it does not modify the metadata for block.
  */
@@ -430,6 +427,19 @@ class BlockPoolSliceScanner {
           return;
         }
 
+        // If the block exists, the exception may due to a race with write:
+        // The BlockSender got an old block path in rbw. BlockReceiver removed
+        // the rbw block from rbw to finalized but BlockSender tried to open the
+        // file before BlockReceiver updated the VolumeMap. The state of the
+        // block can be changed again now, so ignore this error here. If there
+        // is a block really deleted by mistake, DirectoryScan should catch it.
+        if (e instanceof FileNotFoundException ) {
+          LOG.info("Verification failed for " + block +
+              ". It may be due to race with write.");
+          deleteBlock(block.getLocalBlock());
+          return;
+        }
+
         LOG.warn((second ? "Second " : "First ") + "Verification failed for "
             + block, e);
         

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java

@@ -146,6 +146,7 @@ public class NameNode {
     DFS_NAMENODE_HTTPS_ADDRESS_KEY,
     DFS_NAMENODE_KEYTAB_FILE_KEY,
     DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY,
+    DFS_NAMENODE_SECONDARY_HTTPS_PORT_KEY,
     DFS_SECONDARY_NAMENODE_KEYTAB_FILE_KEY,
     DFS_NAMENODE_BACKUP_ADDRESS_KEY,
     DFS_NAMENODE_BACKUP_HTTP_ADDRESS_KEY,

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/SecondaryNameNode.java

@@ -254,7 +254,8 @@ public class SecondaryNameNode implements Runnable {
                 Krb5AndCertsSslSocketConnector.KRB5_CIPHER_SUITES.get(0));
             InetSocketAddress secInfoSocAddr = 
               NetUtils.createSocketAddr(infoBindAddress + ":"+ conf.getInt(
-                "dfs.secondary.https.port", 443));
+                DFS_NAMENODE_SECONDARY_HTTPS_PORT_KEY,
+                DFS_NAMENODE_SECONDARY_HTTPS_PORT_DEFAULT));
             imagePort = secInfoSocAddr.getPort();
             infoServer.addSslListener(secInfoSocAddr, conf, false, true);
           }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestAppendDifferentChecksum.java

@@ -47,12 +47,6 @@ public class TestAppendDifferentChecksum {
   public static void setupCluster() throws IOException {
     Configuration conf = new HdfsConfiguration();
     conf.setInt(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 4096);
-    
-    // disable block scanner, since otherwise this test can trigger
-    // HDFS-2525, which is a different bug than we're trying to unit test
-    // here! When HDFS-2525 is fixed, this can be removed.
-    conf.setInt(DFSConfigKeys.DFS_DATANODE_SCAN_PERIOD_HOURS_KEY, -1);
-
     conf.set("fs.hdfs.impl.disable.cache", "true");
     cluster = new MiniDFSCluster.Builder(conf)
       .numDataNodes(1)

hadoop-mapreduce-project/CHANGES.txt

@@ -94,6 +94,9 @@ Release 0.23.2 - UNRELEASED
 
   IMPROVEMENTS
 
+    MAPREDUCE-3854. Fixed and reenabled tests related to MR child JVM's
+    environmental variables in TestMiniMRChildTask. (Tom White via vinodkv)
+
   OPTIMIZATIONS
 
   BUG FIXES
@@ -104,6 +107,9 @@ Release 0.23.2 - UNRELEASED
     MAPREDUCE-3852. Test TestLinuxResourceCalculatorPlugin failing. (Thomas 
     Graves via mahadev)
 
+    MAPREDUCE-3736. Variable substitution depth too large for fs.default.name 
+    causes jobs to fail (ahmed via tucu).
+ 
 Release 0.23.1 - 2012-02-08 
 
   INCOMPATIBLE CHANGES
@@ -812,6 +818,9 @@ Release 0.23.1 - 2012-02-08
     MAPREDUCE-3802. Added test to validate that AM can crash multiple times and
     still can recover successfully after MAPREDUCE-3846. (vinodkv)
 
+    MAPREDUCE-3858. Task attempt failure during commit results in task never completing.
+    (Tom White via mahadev)
+
 Release 0.23.0 - 2011-11-01 
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TaskImpl.java

@@ -832,6 +832,9 @@ public abstract class TaskImpl implements Task, EventHandler<TaskEvent> {
     public TaskState transition(TaskImpl task, TaskEvent event) {
       task.failedAttempts++;
       TaskTAttemptEvent castEvent = (TaskTAttemptEvent) event;
+      if (castEvent.getTaskAttemptID().equals(task.commitAttempt)) {
+        task.commitAttempt = null;
+      }
       TaskAttempt attempt = task.attempts.get(castEvent.getTaskAttemptID());
       if (attempt.getAssignedContainerMgrAddress() != null) {
         //container was assigned
@@ -877,6 +880,7 @@ public abstract class TaskImpl implements Task, EventHandler<TaskEvent> {
 
     protected void unSucceed(TaskImpl task) {
       ++task.numberUncompletedAttempts;
+      task.commitAttempt = null;
       task.successfulAttempt = null;
     }
   }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TestTaskImpl.java

@@ -18,6 +18,8 @@
 package org.apache.hadoop.mapreduce.v2.app.job.impl;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
@@ -261,6 +263,12 @@ public class TestTaskImpl {
     assertTaskRunningState();    
   }
   
+  private void commitTaskAttempt(TaskAttemptId attemptId) {
+    mockTask.handle(new TaskTAttemptEvent(attemptId, 
+        TaskEventType.T_ATTEMPT_COMMIT_PENDING));
+    assertTaskRunningState();    
+  }
+  
   private MockTaskAttemptImpl getLastAttempt() {
     return taskAttempts.get(taskAttempts.size()-1);
   }
@@ -279,32 +287,45 @@ public class TestTaskImpl {
     assertTaskRunningState();  
   }
   
+  private void failRunningTaskAttempt(TaskAttemptId attemptId) {
+    mockTask.handle(new TaskTAttemptEvent(attemptId, 
+        TaskEventType.T_ATTEMPT_FAILED));
+    assertTaskRunningState();
+  }
+  
   /**
    * {@link TaskState#NEW}
    */
   private void assertTaskNewState() {
-    assertEquals(mockTask.getState(), TaskState.NEW);
+    assertEquals(TaskState.NEW, mockTask.getState());
   }
   
   /**
    * {@link TaskState#SCHEDULED}
    */
   private void assertTaskScheduledState() {
-    assertEquals(mockTask.getState(), TaskState.SCHEDULED);
+    assertEquals(TaskState.SCHEDULED, mockTask.getState());
   }
 
   /**
    * {@link TaskState#RUNNING}
    */
   private void assertTaskRunningState() {
-    assertEquals(mockTask.getState(), TaskState.RUNNING);        
+    assertEquals(TaskState.RUNNING, mockTask.getState());
   }
     
   /**
    * {@link TaskState#KILL_WAIT}
    */
   private void assertTaskKillWaitState() {
-    assertEquals(mockTask.getState(), TaskState.KILL_WAIT);
+    assertEquals(TaskState.KILL_WAIT, mockTask.getState());
+  }
+  
+  /**
+   * {@link TaskState#SUCCEEDED}
+   */
+  private void assertTaskSucceededState() {
+    assertEquals(TaskState.SUCCEEDED, mockTask.getState());
   }
   
   @Test
@@ -410,4 +431,31 @@ public class TestTaskImpl {
         
   }
   
+  @Test
+  public void testFailureDuringTaskAttemptCommit() {
+    TaskId taskId = getNewTaskID();
+    scheduleTaskAttempt(taskId);
+    launchTaskAttempt(getLastAttempt().getAttemptId());
+    updateLastAttemptState(TaskAttemptState.COMMIT_PENDING);
+    commitTaskAttempt(getLastAttempt().getAttemptId());
+
+    // During the task attempt commit there is an exception which causes
+    // the attempt to fail
+    updateLastAttemptState(TaskAttemptState.FAILED);
+    failRunningTaskAttempt(getLastAttempt().getAttemptId());
+
+    assertEquals(2, taskAttempts.size());
+    updateLastAttemptState(TaskAttemptState.SUCCEEDED);
+    commitTaskAttempt(getLastAttempt().getAttemptId());
+    mockTask.handle(new TaskTAttemptEvent(getLastAttempt().getAttemptId(), 
+        TaskEventType.T_ATTEMPT_SUCCEEDED));
+    
+    assertFalse("First attempt should not commit",
+        mockTask.canCommit(taskAttempts.get(0).getAttemptId()));
+    assertTrue("Second attempt should commit",
+        mockTask.canCommit(getLastAttempt().getAttemptId()));
+
+    assertTaskSucceededState();
+  }
+
 }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/src/test/java/org/apache/hadoop/mapred/TestMRWithDistributedCache.java

@@ -159,7 +159,7 @@ public class TestMRWithDistributedCache extends TestCase {
   public void testLocalJobRunner() throws Exception {
     Configuration c = new Configuration();
     c.set(JTConfig.JT_IPC_ADDRESS, "local");
-    c.set("fs.default.name", "file:///");
+    c.set("fs.defaultFS", "file:///");
     testWithConf(c);
   }
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/conf/TestNoDefaultsJobConf.java

@@ -59,7 +59,7 @@ public class TestNoDefaultsJobConf extends HadoopTestCase {
 
     JobConf conf = new JobConf(false);
 
-    conf.set("fs.default.name", createJobConf().get("fs.default.name"));
+    conf.set("fs.defaultFS", createJobConf().get("fs.defaultFS"));
 
     conf.setJobName("mr");
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/fs/JHLogAnalyzer.java

@@ -1024,7 +1024,7 @@ public class JHLogAnalyzer {
       if(testFile != null) {
         LOG.info("Start JHLA test ============ ");
         LocalFileSystem lfs = FileSystem.getLocal(conf);
-        conf.set("fs.default.name", "file:///");
+        conf.set("fs.defaultFS", "file:///");
         JHLAMapper map = new JHLAMapper(conf);
         map.parseLogFile(lfs, new Path(testFile), 0L,
                          new LoggingCollector(), Reporter.NULL);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/io/FileBench.java

@@ -53,7 +53,7 @@ public class FileBench extends Configured implements Tool {
 "unless they are also explicitly included, as in \"-pln -zip\"\n" +
 "Note that CompressionType params only apply to SequenceFiles\n\n" +
 "Useful options to set:\n" +
-"-D fs.default.name=\"file:///\" \\\n" +
+"-D fs.defaultFS=\"file:///\" \\\n" +
 "-D fs.file.impl=org.apache.hadoop.fs.RawLocalFileSystem \\\n" +
 "-D filebench.file.bytes=$((10*1024*1024*1024)) \\\n" +
 "-D filebench.key.words=5 \\\n" +

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestCombineFileInputFormat.java

@@ -41,7 +41,7 @@ public class TestCombineFileInputFormat {
   private static FileSystem localFs = null; 
   static {
     try {
-      defaultConf.set("fs.default.name", "file:///");
+      defaultConf.set("fs.defaultFS", "file:///");
       localFs = FileSystem.getLocal(defaultConf);
     } catch (IOException e) {
       throw new RuntimeException("init failure", e);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestConcatenatedCompressedInput.java

@@ -69,7 +69,7 @@ public class TestConcatenatedCompressedInput {
 
   static {
     try {
-      defaultConf.set("fs.default.name", "file:///");
+      defaultConf.set("fs.defaultFS", "file:///");
       localFs = FileSystem.getLocal(defaultConf);
     } catch (IOException e) {
       throw new RuntimeException("init failure", e);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestMiniMRChildTask.java

@@ -219,8 +219,8 @@ public class TestMiniMRChildTask {
       
       // check if X=$X:/abc works for LD_LIBRARY_PATH
       checkEnv("LD_LIBRARY_PATH", "/tmp", "append");
-      // check if X=/tmp works for an already existing parameter
+      // check if X=y works for an already existing parameter
-      checkEnv("HOME", "/tmp", "noappend");
+      checkEnv("LANG", "en_us_8859_1", "noappend");
       // check if X=/tmp for a new env variable
       checkEnv("MY_PATH", "/tmp", "noappend");
       // check if X=$X:/tmp works for a new env var and results into :/tmp
@@ -269,8 +269,8 @@ public class TestMiniMRChildTask {
       
       // check if X=$X:/abc works for LD_LIBRARY_PATH
       checkEnv("LD_LIBRARY_PATH", "/tmp", "append");
-      // check if X=/tmp works for an already existing parameter
+      // check if X=y works for an already existing parameter
-      checkEnv("HOME", "/tmp", "noappend");
+      checkEnv("LANG", "en_us_8859_1", "noappend");
       // check if X=/tmp for a new env variable
       checkEnv("MY_PATH", "/tmp", "noappend");
       // check if X=$X:/tmp works for a new env var and results into :/tmp
@@ -369,7 +369,7 @@ public class TestMiniMRChildTask {
    *   - x=y (x can be a already existing env variable or a new variable)
    *   - x=$x:y (replace $x with the current value of x)
    */
-
+  @Test
   public void testTaskEnv(){
     try {
       JobConf conf = new JobConf(mr.getConfig());
@@ -392,6 +392,7 @@ public class TestMiniMRChildTask {
    *   - x=y (x can be a already existing env variable or a new variable)
    *   - x=$x:y (replace $x with the current value of x)
    */
+  @Test
   public void testTaskOldEnv(){
     try {
       JobConf conf = new JobConf(mr.getConfig());
@@ -415,7 +416,7 @@ public class TestMiniMRChildTask {
               EnvCheckMapper.class, EnvCheckReducer.class);
     // test 
     //  - new SET of new var (MY_PATH)
-    //  - set of old var (HOME)
+    //  - set of old var (LANG)
     //  - append to an old var from modified env (LD_LIBRARY_PATH)
     //  - append to an old var from tt's env (PATH)
     //  - append to a new var (NEW_PATH)
@@ -432,10 +433,10 @@ public class TestMiniMRChildTask {
       mapTaskJavaOpts = reduceTaskJavaOpts = TASK_OPTS_VAL;
     }
     conf.set(mapTaskEnvKey, 
-             "MY_PATH=/tmp,HOME=/tmp,LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/tmp," +
+             "MY_PATH=/tmp,LANG=en_us_8859_1,LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/tmp," +
              "PATH=$PATH:/tmp,NEW_PATH=$NEW_PATH:/tmp");
     conf.set(reduceTaskEnvKey, 
-             "MY_PATH=/tmp,HOME=/tmp,LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/tmp," +
+             "MY_PATH=/tmp,LANG=en_us_8859_1,LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/tmp," +
              "PATH=$PATH:/tmp,NEW_PATH=$NEW_PATH:/tmp");
     conf.set("path", System.getenv("PATH"));
     conf.set(mapTaskJavaOptsKey, mapTaskJavaOpts);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/TestTextInputFormat.java

@@ -55,7 +55,7 @@ public class TestTextInputFormat {
   private static FileSystem localFs = null; 
   static {
     try {
-      defaultConf.set("fs.default.name", "file:///");
+      defaultConf.set("fs.defaultFS", "file:///");
       localFs = FileSystem.getLocal(defaultConf);
     } catch (IOException e) {
       throw new RuntimeException("init failure", e);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/TestMapCollection.java

@@ -314,7 +314,7 @@ public class TestMapCollection {
     job.setNumReduceTasks(1);
     job.getConfiguration().set(MRConfig.FRAMEWORK_NAME, MRConfig.LOCAL_FRAMEWORK_NAME);
     job.getConfiguration().setInt(MRJobConfig.IO_SORT_FACTOR, 1000);
-    job.getConfiguration().set("fs.default.name", "file:///");
+    job.getConfiguration().set("fs.defaultFS", "file:///");
     job.getConfiguration().setInt("test.mapcollection.num.maps", 1);
     job.setInputFormatClass(FakeIF.class);
     job.setOutputFormatClass(NullOutputFormat.class);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestFileInputFormat.java

@@ -45,9 +45,9 @@ public class TestFileInputFormat {
   @Test
   public void testAddInputPath() throws IOException {
     final Configuration conf = new Configuration();
-    conf.set("fs.default.name", "s3://abc:xyz@hostname/");
+    conf.set("fs.defaultFS", "s3://abc:xyz@hostname/");
     final Job j = Job.getInstance(conf);
-    j.getConfiguration().set("fs.default.name", "s3://abc:xyz@hostname/");
+    j.getConfiguration().set("fs.defaultFS", "s3://abc:xyz@hostname/");
 
     //setup default fs
     final FileSystem defaultfs = FileSystem.get(conf);

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestMRKeyValueTextInputFormat.java

@@ -57,7 +57,7 @@ public class TestMRKeyValueTextInputFormat {
   private static FileSystem localFs = null; 
   static {
     try {
-      defaultConf.set("fs.default.name", "file:///");
+      defaultConf.set("fs.defaultFS", "file:///");
       localFs = FileSystem.getLocal(defaultConf);
     } catch (IOException e) {
       throw new RuntimeException("init failure", e);

hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml

@@ -457,7 +457,7 @@
 
   <property>
     <name>mapreduce.job.hdfs-servers</name>
-    <value>${fs.default.name}</value>
+    <value>${fs.defaultFS}</value>
   </property>
 
   <!-- WebAppProxy Configuration-->