Merge branch 'trunk' into MR-2841

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

@@ -330,6 +330,9 @@ Trunk (Unreleased)
 
     HADOOP-11033. shell scripts ignore JAVA_HOME on OS X. (aw)
 
+    HADOOP-11052. hadoop_verify_secure_prereq's results aren't checked 
+    in bin/hdfs (aw)
+
   OPTIMIZATIONS
 
     HADOOP-7761. Improve the performance of raw comparisons. (todd)
@@ -504,6 +507,8 @@ Release 2.6.0 - UNRELEASED
     HADOOP-11060. Create a CryptoCodec test that verifies interoperability 
     between the JCE and OpenSSL implementations. (hitliuyi via tucu)
 
+    HADOOP-11070. Create MiniKMS for testing. (tucu)
+
   OPTIMIZATIONS
 
     HADOOP-10838. Byte array native checksumming. (James Thomas via todd)
@@ -757,6 +762,12 @@ Release 2.6.0 - UNRELEASED
     HADOOP-11063. KMS cannot deploy on Windows, because class names are too long.
     (cnauroth)
 
+    HADOOP-11067. warning message 'ssl.client.truststore.location has not
+    been set' gets printed for hftp command. (Xiaoyu Yao via Arpit Agarwal)
+
+    HADOOP-11069. KMSClientProvider should use getAuthenticationMethod() to
+    determine if in proxyuser mode or not. (tucu)
+
 Release 2.5.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES
@@ -774,6 +785,8 @@ Release 2.5.1 - UNRELEASED
 
     HADOOP-11001. Fix test-patch to work with the git repo. (kasha)
 
+    HADOOP-11065. Rat check should exclude "**/build/**". (kasha)
+
 Release 2.5.0 - 2014-08-11
 
   INCOMPATIBLE CHANGES

hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh

@@ -644,9 +644,9 @@ function hadoop_verify_secure_prereq
   # this.
   
   # ${EUID} comes from the shell itself!
-  if [[ "${EUID}" -ne 0 ]] || [[ -n "${HADOOP_SECURE_COMMAND}" ]]; then
+  if [[ "${EUID}" -ne 0 ]] && [[ -z "${HADOOP_SECURE_COMMAND}" ]]; then
     hadoop_error "ERROR: You must be a privileged in order to run a secure serice."
-    return 1
+    exit 1
   else
     return 0
   fi

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSClientProvider.java

@@ -385,9 +385,9 @@ public class KMSClientProvider extends KeyProvider implements CryptoExtension,
       // if current UGI is different from UGI at constructor time, behave as
       // proxyuser
       UserGroupInformation currentUgi = UserGroupInformation.getCurrentUser();
-      final String doAsUser =
-          (loginUgi.getShortUserName().equals(currentUgi.getShortUserName()))
-          ? null : currentUgi.getShortUserName();
+      final String doAsUser = (currentUgi.getAuthenticationMethod() ==
+          UserGroupInformation.AuthenticationMethod.PROXY)
+                              ? currentUgi.getShortUserName() : null;
 
       // creating the HTTP connection using the current UGI at constructor time
       conn = loginUgi.doAs(new PrivilegedExceptionAction<HttpURLConnection>() {

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/ssl/FileBasedKeyStoresFactory.java

@@ -212,7 +212,7 @@ public class FileBasedKeyStoresFactory implements KeyStoresFactory {
       LOG.debug(mode.toString() + " Loaded TrustStore: " + truststoreLocation);
       trustManagers = new TrustManager[]{trustManager};
     } else {
-      LOG.warn("The property '" + locationProperty + "' has not been set, " +
+      LOG.debug("The property '" + locationProperty + "' has not been set, " +
           "no TrustStore will be loaded");
       trustManagers = null;
     }

hadoop-common-project/hadoop-kms/pom.xml

@@ -222,9 +222,9 @@
             </goals>
             <configuration>
               <target>
-                <mkdir dir="${project.build.directory}/test-classes/webapp"/>
+                <mkdir dir="${project.build.directory}/test-classes/kms-webapp"/>
 
-                <copy todir="${project.build.directory}/test-classes/webapp">
+                <copy todir="${project.build.directory}/test-classes/kms-webapp">
                   <fileset dir="${basedir}/src/main/webapp"/>
                 </copy>
               </target>

hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/MiniKMS.java

@@ -0,0 +1,197 @@
+/**
+ * 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.crypto.key.kms.server;
+
+import com.google.common.base.Preconditions;
+import org.apache.hadoop.conf.Configuration;
+import org.mortbay.jetty.Connector;
+import org.mortbay.jetty.Server;
+import org.mortbay.jetty.security.SslSocketConnector;
+import org.mortbay.jetty.webapp.WebAppContext;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.Writer;
+import java.net.InetAddress;
+import java.net.MalformedURLException;
+import java.net.ServerSocket;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+
+public class MiniKMS {
+
+  private static Server createJettyServer(String keyStore, String password) {
+    try {
+      boolean ssl = keyStore != null;
+      InetAddress localhost = InetAddress.getByName("localhost");
+      String host = "localhost";
+      ServerSocket ss = new ServerSocket(0, 50, localhost);
+      int port = ss.getLocalPort();
+      ss.close();
+      Server server = new Server(0);
+      if (!ssl) {
+        server.getConnectors()[0].setHost(host);
+        server.getConnectors()[0].setPort(port);
+      } else {
+        SslSocketConnector c = new SslSocketConnector();
+        c.setHost(host);
+        c.setPort(port);
+        c.setNeedClientAuth(false);
+        c.setKeystore(keyStore);
+        c.setKeystoreType("jks");
+        c.setKeyPassword(password);
+        server.setConnectors(new Connector[]{c});
+      }
+      return server;
+    } catch (Exception ex) {
+      throw new RuntimeException("Could not start embedded servlet container, "
+          + ex.getMessage(), ex);
+    }
+  }
+
+  private static URL getJettyURL(Server server) {
+    boolean ssl = server.getConnectors()[0].getClass()
+        == SslSocketConnector.class;
+    try {
+      String scheme = (ssl) ? "https" : "http";
+      return new URL(scheme + "://" +
+          server.getConnectors()[0].getHost() + ":" +
+          server.getConnectors()[0].getPort());
+    } catch (MalformedURLException ex) {
+      throw new RuntimeException("It should never happen, " + ex.getMessage(),
+          ex);
+    }
+  }
+
+  public static class Builder {
+    private File kmsConfDir;
+    private String log4jConfFile;
+    private File keyStoreFile;
+    private String keyStorePassword;
+
+    public Builder() {
+      kmsConfDir = new File("target/test-classes").getAbsoluteFile();
+      log4jConfFile = "kms-log4j.properties";
+    }
+
+    public Builder setKmsConfDir(File confDir) {
+      Preconditions.checkNotNull(confDir, "KMS conf dir is NULL");
+      Preconditions.checkArgument(confDir.exists(),
+          "KMS conf dir does not exist");
+      kmsConfDir = confDir;
+      return this;
+    }
+
+    public Builder setLog4jConfFile(String log4jConfFile) {
+      Preconditions.checkNotNull(log4jConfFile, "log4jconf file is NULL");
+      this.log4jConfFile = log4jConfFile;
+      return this;
+    }
+
+    public Builder setSslConf(File keyStoreFile, String keyStorePassword) {
+      Preconditions.checkNotNull(keyStoreFile, "keystore file is NULL");
+      Preconditions.checkNotNull(keyStorePassword, "keystore password is NULL");
+      Preconditions.checkArgument(keyStoreFile.exists(),
+          "keystore file does not exist");
+      this.keyStoreFile = keyStoreFile;
+      this.keyStorePassword = keyStorePassword;
+      return this;
+    }
+
+    public MiniKMS build() {
+      Preconditions.checkArgument(kmsConfDir.exists(),
+          "KMS conf dir does not exist");
+      return new MiniKMS(kmsConfDir.getAbsolutePath(), log4jConfFile,
+          (keyStoreFile != null) ? keyStoreFile.getAbsolutePath() : null,
+          keyStorePassword);
+    }
+  }
+
+  private String kmsConfDir;
+  private String log4jConfFile;
+  private String keyStore;
+  private String keyStorePassword;
+  private Server jetty;
+  private URL kmsURL;
+
+  public MiniKMS(String kmsConfDir, String log4ConfFile, String keyStore,
+      String password) {
+    this.kmsConfDir = kmsConfDir;
+    this.log4jConfFile = log4ConfFile;
+    this.keyStore = keyStore;
+    this.keyStorePassword = password;
+  }
+
+  public void start() throws Exception {
+    System.setProperty(KMSConfiguration.KMS_CONFIG_DIR, kmsConfDir);
+    File aclsFile = new File(kmsConfDir, "kms-acls.xml");
+    if (!aclsFile.exists()) {
+      Configuration acls = new Configuration(false);
+      Writer writer = new FileWriter(aclsFile);
+      acls.writeXml(writer);
+      writer.close();
+    }
+    File coreFile = new File(kmsConfDir, "core-site.xml");
+    if (!coreFile.exists()) {
+      Configuration core = new Configuration();
+      Writer writer = new FileWriter(coreFile);
+      core.writeXml(writer);
+      writer.close();
+    }
+    File kmsFile = new File(kmsConfDir, "kms-site.xml");
+    if (!kmsFile.exists()) {
+      Configuration kms = new Configuration(false);
+      kms.set("hadoop.security.key.provider.path",
+          "jceks://file@" + kmsConfDir + "/kms.keystore");
+      kms.set("hadoop.kms.authentication.type", "simple");
+      Writer writer = new FileWriter(kmsFile);
+      kms.writeXml(writer);
+      writer.close();
+    }
+    System.setProperty("log4j.configuration", log4jConfFile);
+    jetty = createJettyServer(keyStore, keyStorePassword);
+    ClassLoader cl = Thread.currentThread().getContextClassLoader();
+    URL url = cl.getResource("kms-webapp");
+    if (url == null) {
+      throw new RuntimeException(
+          "Could not find kms-webapp/ dir in test classpath");
+    }
+    WebAppContext context = new WebAppContext(url.getPath(), "/kms");
+    jetty.addHandler(context);
+    jetty.start();
+    kmsURL = new URL(getJettyURL(jetty), "kms");
+  }
+
+  public URL getKMSUrl() {
+    return kmsURL;
+  }
+
+  public void stop() {
+    if (jetty != null && jetty.isRunning()) {
+      try {
+        jetty.stop();
+        jetty = null;
+      } catch (Exception ex) {
+        throw new RuntimeException("Could not stop MiniKMS embedded Jetty, " +
+            ex.getMessage(), ex);
+      }
+    }
+  }
+
+}

hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java

@@ -36,10 +36,6 @@ import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
-import org.mortbay.jetty.Connector;
-import org.mortbay.jetty.Server;
-import org.mortbay.jetty.security.SslSocketConnector;
-import org.mortbay.jetty.webapp.WebAppContext;
 
 import javax.security.auth.Subject;
 import javax.security.auth.kerberos.KerberosPrincipal;
@@ -52,7 +48,6 @@ import java.io.IOException;
 import java.io.Writer;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
-import java.net.MalformedURLException;
 import java.net.ServerSocket;
 import java.net.SocketTimeoutException;
 import java.net.URI;
@@ -91,49 +86,6 @@ public class TestKMS {
     return file;
   }
 
-  public static Server createJettyServer(String keyStore, String password) {
-    try {
-      boolean ssl = keyStore != null;
-      InetAddress localhost = InetAddress.getByName("localhost");
-      String host = "localhost";
-      ServerSocket ss = new ServerSocket(0, 50, localhost);
-      int port = ss.getLocalPort();
-      ss.close();
-      Server server = new Server(0);
-      if (!ssl) {
-        server.getConnectors()[0].setHost(host);
-        server.getConnectors()[0].setPort(port);
-      } else {
-        SslSocketConnector c = new SslSocketConnector();
-        c.setHost(host);
-        c.setPort(port);
-        c.setNeedClientAuth(false);
-        c.setKeystore(keyStore);
-        c.setKeystoreType("jks");
-        c.setKeyPassword(password);
-        server.setConnectors(new Connector[]{c});
-      }
-      return server;
-    } catch (Exception ex) {
-      throw new RuntimeException("Could not start embedded servlet container, "
-          + ex.getMessage(), ex);
-    }
-  }
-
-  public static URL getJettyURL(Server server) {
-    boolean ssl = server.getConnectors()[0].getClass()
-        == SslSocketConnector.class;
-    try {
-      String scheme = (ssl) ? "https" : "http";
-      return new URL(scheme + "://" +
-          server.getConnectors()[0].getHost() + ":" +
-          server.getConnectors()[0].getPort());
-    } catch (MalformedURLException ex) {
-      throw new RuntimeException("It should never happen, " + ex.getMessage(),
-          ex);
-    }
-  }
-
   public static abstract class KMSCallable implements Callable<Void> {
     private URL kmsUrl;
 
@@ -144,33 +96,19 @@ public class TestKMS {
 
   protected void runServer(String keystore, String password, File confDir,
       KMSCallable callable) throws Exception {
-    System.setProperty(KMSConfiguration.KMS_CONFIG_DIR,
-        confDir.getAbsolutePath());
-    System.setProperty("log4j.configuration", "log4j.properties");
-    Server jetty = createJettyServer(keystore, password);
+    MiniKMS.Builder miniKMSBuilder = new MiniKMS.Builder().setKmsConfDir(confDir)
+        .setLog4jConfFile("log4j.properties");
+    if (keystore != null) {
+      miniKMSBuilder.setSslConf(new File(keystore), password);
+    }
+    MiniKMS miniKMS = miniKMSBuilder.build();
+    miniKMS.start();
     try {
-      ClassLoader cl = Thread.currentThread().getContextClassLoader();
-      URL url = cl.getResource("webapp");
-      if (url == null) {
-        throw new RuntimeException(
-            "Could not find webapp/ dir in test classpath");
-      }
-      WebAppContext context = new WebAppContext(url.getPath(), "/kms");
-      jetty.addHandler(context);
-      jetty.start();
-      url = new URL(getJettyURL(jetty), "kms");
-      System.out.println("Test KMS running at: " + url);
-      callable.kmsUrl = url;
+      System.out.println("Test KMS running at: " + miniKMS.getKMSUrl());
+      callable.kmsUrl = miniKMS.getKMSUrl();
       callable.call();
     } finally {
-      if (jetty != null && jetty.isRunning()) {
-        try {
-          jetty.stop();
-        } catch (Exception ex) {
-          throw new RuntimeException("Could not stop embedded Jetty, " +
-              ex.getMessage(), ex);
-        }
-      }
+      miniKMS.stop();
     }
   }
 
@@ -1219,7 +1157,7 @@ public class TestKMS {
         final URI uri = createKMSUri(getKMSUrl());
 
         // proxyuser client using kerberos credentials
-        UserGroupInformation clientUgi = UserGroupInformation.
+        final UserGroupInformation clientUgi = UserGroupInformation.
             loginUserFromKeytabAndReturnUGI("client", keytab.getAbsolutePath());
         clientUgi.doAs(new PrivilegedExceptionAction<Void>() {
           @Override
@@ -1229,7 +1167,7 @@ public class TestKMS {
 
             // authorized proxyuser
             UserGroupInformation fooUgi =
-                UserGroupInformation.createRemoteUser("foo");
+                UserGroupInformation.createProxyUser("foo", clientUgi);
             fooUgi.doAs(new PrivilegedExceptionAction<Void>() {
               @Override
               public Void run() throws Exception {
@@ -1241,7 +1179,7 @@ public class TestKMS {
 
             // unauthorized proxyuser
             UserGroupInformation foo1Ugi =
-                UserGroupInformation.createRemoteUser("foo1");
+                UserGroupInformation.createProxyUser("foo1", clientUgi);
             foo1Ugi.doAs(new PrivilegedExceptionAction<Void>() {
               @Override
               public Void run() throws Exception {

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

@@ -444,6 +444,8 @@ Release 2.6.0 - UNRELEASED
     HDFS-6376. Distcp data between two HA clusters requires another configuration.
     (Dave Marion and Haohui Mai via jing9)
 
+    HDFS-6940. Refactoring to allow ConsensusNode implementation. (shv)
+
   OPTIMIZATIONS
 
     HDFS-6690. Deduplicate xattr names in memory. (wang)
@@ -602,6 +604,17 @@ Release 2.6.0 - UNRELEASED
     HDFS-6996. SnapshotDiff report can hit IndexOutOfBoundsException when there
     are nested renamed directory/file. (jing9)
 
+    HDFS-6831. Inconsistency between 'hdfs dfsadmin' and 'hdfs dfsadmin -help'.
+    (Xiaoyu Yao via Arpit Agarwal)
+
+    HDFS-6979. hdfs.dll does not produce .pdb files. (cnauroth)
+
+    HDFS-6862. Add missing timeout annotations to tests. (Xiaoyu Yao via
+    Arpit Agarwal)
+
+    HDFS-6898. DN must reserve space for a full block when an RBW block is
+    created. (Arpit Agarwal)
+
     BREAKDOWN OF HDFS-6134 AND HADOOP-10150 SUBTASKS AND RELATED JIRAS
   
       HDFS-6387. HDFS CLI admin tool for creating & deleting an
@@ -703,6 +716,9 @@ Release 2.6.0 - UNRELEASED
       HDFS-6714. TestBlocksScheduledCounter#testBlocksScheduledCounter should
       shutdown cluster (vinayakumarb)
 
+      HDFS-6986. DistributedFileSystem must get delegation tokens from configured 
+      KeyProvider. (zhz via tucu)
+
 Release 2.5.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/pom.xml

@@ -415,11 +415,11 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
                     </exec>
                     <exec executable="msbuild" dir="${project.build.directory}/native"
                         failonerror="true">
-                      <arg line="ALL_BUILD.vcxproj /nologo /p:Configuration=Release"/>
+                      <arg line="ALL_BUILD.vcxproj /nologo /p:Configuration=RelWithDebInfo /p:LinkIncremental=false"/>
                     </exec>
                     <!-- Copy for inclusion in distribution. -->
                     <copy todir="${project.build.directory}/bin">
-                      <fileset dir="${project.build.directory}/native/target/bin/Release"/>
+                      <fileset dir="${project.build.directory}/native/target/bin/RelWithDebInfo"/>
                     </copy>
                   </target>
                 </configuration>
@@ -437,7 +437,7 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
                       <attribute name="test"/>
                       <sequential>
                         <echo message="Running @{test}"/>
-                        <exec executable="${project.build.directory}/native/Release/@{test}" failonerror="true" dir="${project.build.directory}/native/">
+                        <exec executable="${project.build.directory}/native/RelWithDebInfo/@{test}" failonerror="true" dir="${project.build.directory}/native/">
                           <env key="CLASSPATH" value="${test_classpath}:${compile_classpath}"/>
                           <!-- HADOOP_HOME required to find winutils. -->
                           <env key="HADOOP_HOME" value="${hadoop.common.build.dir}"/>

hadoop-hdfs-project/hadoop-hdfs/src/main/bin/hdfs

@@ -225,14 +225,13 @@ esac
 
 if [[ -n "${secure_service}" ]]; then
   HADOOP_SECURE_USER="${secure_user}"
-  if hadoop_verify_secure_prereq; then
-    hadoop_setup_secure_service
-    priv_outfile="${HADOOP_LOG_DIR}/privileged-${HADOOP_IDENT_STRING}-${COMMAND-$HOSTNAME}.out"
-    priv_errfile="${HADOOP_LOG_DIR}/privileged-${HADOOP_IDENT_STRING}-${COMMAND-$HOSTNAME}.err"
-    priv_pidfile="${HADOOP_PID_DIR}/privileged-${HADOOP_IDENT_STRING}-${COMMAND-$HOSTNAME}.pid"
-    daemon_outfile="${HADOOP_LOG_DIR}/hadoop-${HADOOP_SECURE_USER}-${HADOOP_IDENT_STRING}-${COMMAND}-${HOSTNAME}.out"
-    daemon_pidfile="${HADOOP_PID_DIR}/hadoop-${HADOOP_SECURE_USER}-${HADOOP_IDENT_STRING}-${COMMAND}.pid"
-  fi
+  hadoop_verify_secure_prereq
+  hadoop_setup_secure_service
+  priv_outfile="${HADOOP_LOG_DIR}/privileged-${HADOOP_IDENT_STRING}-${COMMAND-$HOSTNAME}.out"
+  priv_errfile="${HADOOP_LOG_DIR}/privileged-${HADOOP_IDENT_STRING}-${COMMAND-$HOSTNAME}.err"
+  priv_pidfile="${HADOOP_PID_DIR}/privileged-${HADOOP_IDENT_STRING}-${COMMAND-$HOSTNAME}.pid"
+  daemon_outfile="${HADOOP_LOG_DIR}/hadoop-${HADOOP_SECURE_USER}-${HADOOP_IDENT_STRING}-${COMMAND}-${HOSTNAME}.out"
+  daemon_pidfile="${HADOOP_PID_DIR}/hadoop-${HADOOP_SECURE_USER}-${HADOOP_IDENT_STRING}-${COMMAND}.pid"
 else
   daemon_outfile="${HADOOP_LOG_DIR}/hadoop-${HADOOP_IDENT_STRING}-${COMMAND}-${HOSTNAME}.out"
   daemon_pidfile="${HADOOP_PID_DIR}/hadoop-${HADOOP_IDENT_STRING}-${COMMAND}.pid"

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

@@ -3084,4 +3084,8 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
   DFSHedgedReadMetrics getHedgedReadMetrics() {
     return HEDGED_READ_METRIC;
   }
+
+  public KeyProviderCryptoExtension getKeyProvider() {
+    return provider;
+  }
 }

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

@@ -84,8 +84,10 @@ import org.apache.hadoop.hdfs.server.namenode.NameNode;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.AccessControlException;
+import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.util.Progressable;
+import org.apache.hadoop.crypto.key.KeyProviderDelegationTokenExtension;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
@@ -1946,6 +1948,28 @@ public class DistributedFileSystem extends FileSystem {
     }.resolve(this, absF);
   }
 
+  @Override
+  public Token<?>[] addDelegationTokens(
+      final String renewer, Credentials credentials) throws IOException {
+    Token<?>[] tokens = super.addDelegationTokens(renewer, credentials);
+    if (dfs.getKeyProvider() != null) {
+      KeyProviderDelegationTokenExtension keyProviderDelegationTokenExtension =
+          KeyProviderDelegationTokenExtension.
+              createKeyProviderDelegationTokenExtension(dfs.getKeyProvider());
+      Token<?>[] kpTokens = keyProviderDelegationTokenExtension.
+          addDelegationTokens(renewer, credentials);
+      if (tokens != null && kpTokens != null) {
+        Token<?>[] all = new Token<?>[tokens.length + kpTokens.length];
+        System.arraycopy(tokens, 0, all, 0, tokens.length);
+        System.arraycopy(kpTokens, 0, all, tokens.length, kpTokens.length);
+        tokens = all;
+      } else {
+        tokens = (tokens != null) ? tokens : kpTokens;
+      }
+    }
+    return tokens;
+  }
+
   public DFSInotifyEventInputStream getInotifyEventStream() throws IOException {
     return dfs.getInotifyEventStream();
   }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/HdfsConstants.java

@@ -48,7 +48,7 @@ public class HdfsConstants {
       "org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol";
   
   
-  public static final int MIN_BLOCKS_FOR_WRITE = 5;
+  public static final int MIN_BLOCKS_FOR_WRITE = 1;
 
   // Long that indicates "leave current quota unchanged"
   public static final long QUOTA_DONT_SET = Long.MAX_VALUE;

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java

@@ -164,7 +164,7 @@ public class BlockManager {
   final BlocksMap blocksMap;
 
   /** Replication thread. */
-  final Daemon replicationThread = new Daemon(new ReplicationMonitor());
+  Daemon replicationThread;
   
   /** Store blocks -> datanodedescriptor(s) map of corrupt replicas */
   final CorruptReplicasMap corruptReplicas = new CorruptReplicasMap();
@@ -263,6 +263,7 @@ public class BlockManager {
     this.namesystem = namesystem;
     datanodeManager = new DatanodeManager(this, namesystem, conf);
     heartbeatManager = datanodeManager.getHeartbeatManager();
+    setReplicationMonitor(new ReplicationMonitor());
 
     final long pendingPeriod = conf.getLong(
         DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_SEC_KEY,
@@ -394,7 +395,23 @@ public class BlockManager {
           lifetimeMin*60*1000L, 0, null, encryptionAlgorithm);
     }
   }
-  
+
+  public long getReplicationRecheckInterval() {
+    return replicationRecheckInterval;
+  }
+
+  public AtomicLong excessBlocksCount() {
+    return excessBlocksCount;
+  }
+
+  public void clearInvalidateBlocks() {
+    invalidateBlocks.clear();
+  }
+
+  void setReplicationMonitor(Runnable replicationMonitor) {
+    replicationThread = new Daemon(replicationMonitor);
+  }
+
   public void setBlockPoolId(String blockPoolId) {
     if (isBlockTokenEnabled()) {
       blockTokenSecretManager.setBlockPoolId(blockPoolId);
@@ -1616,7 +1633,7 @@ public class BlockManager {
    * If there were any replication requests that timed out, reap them
    * and put them back into the neededReplication queue
    */
-  private void processPendingReplications() {
+  void processPendingReplications() {
     Block[] timedOutItems = pendingReplications.getTimedOutBlocks();
     if (timedOutItems != null) {
       namesystem.writeLock();

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java

@@ -1053,7 +1053,7 @@ public class DatanodeManager {
    * 3. Added to exclude --> start decommission.
    * 4. Removed from exclude --> stop decommission.
    */
-  private void refreshDatanodes() {
+  void refreshDatanodes() {
     for(DatanodeDescriptor node : datanodeMap.values()) {
       // Check if not include.
       if (!hostFileManager.isIncluded(node)) {
@@ -1586,5 +1586,9 @@ public class DatanodeManager {
   public void setShouldSendCachingCommands(boolean shouldSendCachingCommands) {
     this.shouldSendCachingCommands = shouldSendCachingCommands;
   }
+
+  public HostFileManager getHostFileManager() {
+    return this.hostFileManager;
+  }
 }
 

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/HostFileManager.java

@@ -129,6 +129,10 @@ class HostFileManager {
   void refresh(String includeFile, String excludeFile) throws IOException {
     HostSet newIncludes = readFile("included", includeFile);
     HostSet newExcludes = readFile("excluded", excludeFile);
+    setHosts(newIncludes, newExcludes);
+  }
+
+  void setHosts(HostSet newIncludes, HostSet newExcludes) {
     synchronized (this) {
       includes = newIncludes;
       excludes = newExcludes;

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

@@ -34,10 +34,12 @@ public class ReplicaBeingWritten extends ReplicaInPipeline {
    * @param genStamp replica generation stamp
    * @param vol volume where replica is located
    * @param dir directory path where block and meta files are located
+   * @param bytesToReserve disk space to reserve for this replica, based on
+   *                       the estimated maximum block length.
    */
   public ReplicaBeingWritten(long blockId, long genStamp, 
-        FsVolumeSpi vol, File dir) {
-    super( blockId, genStamp, vol, dir);
+        FsVolumeSpi vol, File dir, long bytesToReserve) {
+    super(blockId, genStamp, vol, dir, bytesToReserve);
   }
   
   /**
@@ -60,10 +62,12 @@ public class ReplicaBeingWritten extends ReplicaInPipeline {
    * @param vol volume where replica is located
    * @param dir directory path where block and meta files are located
    * @param writer a thread that is writing to this replica
+   * @param bytesToReserve disk space to reserve for this replica, based on
+   *                       the estimated maximum block length.
    */
   public ReplicaBeingWritten(long blockId, long len, long genStamp,
-      FsVolumeSpi vol, File dir, Thread writer ) {
-    super( blockId, len, genStamp, vol, dir, writer);
+      FsVolumeSpi vol, File dir, Thread writer, long bytesToReserve) {
+    super(blockId, len, genStamp, vol, dir, writer, bytesToReserve);
   }
 
   /**

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

@@ -44,6 +44,13 @@ public class ReplicaInPipeline extends ReplicaInfo
   private long bytesOnDisk;
   private byte[] lastChecksum;  
   private Thread writer;
+
+  /**
+   * Bytes reserved for this replica on the containing volume.
+   * Based off difference between the estimated maximum block length and
+   * the bytes already written to this block.
+   */
+  private long bytesReserved;
   
   /**
    * Constructor for a zero length replica
@@ -51,10 +58,12 @@ public class ReplicaInPipeline extends ReplicaInfo
    * @param genStamp replica generation stamp
    * @param vol volume where replica is located
    * @param dir directory path where block and meta files are located
+   * @param bytesToReserve disk space to reserve for this replica, based on
+   *                       the estimated maximum block length.
    */
   public ReplicaInPipeline(long blockId, long genStamp, 
-        FsVolumeSpi vol, File dir) {
-    this( blockId, 0L, genStamp, vol, dir, Thread.currentThread());
+        FsVolumeSpi vol, File dir, long bytesToReserve) {
+    this(blockId, 0L, genStamp, vol, dir, Thread.currentThread(), bytesToReserve);
   }
 
   /**
@@ -67,7 +76,7 @@ public class ReplicaInPipeline extends ReplicaInfo
   ReplicaInPipeline(Block block, 
       FsVolumeSpi vol, File dir, Thread writer) {
     this( block.getBlockId(), block.getNumBytes(), block.getGenerationStamp(),
-        vol, dir, writer);
+        vol, dir, writer, 0L);
   }
 
   /**
@@ -78,13 +87,16 @@ public class ReplicaInPipeline extends ReplicaInfo
    * @param vol volume where replica is located
    * @param dir directory path where block and meta files are located
    * @param writer a thread that is writing to this replica
+   * @param bytesToReserve disk space to reserve for this replica, based on
+   *                       the estimated maximum block length.
    */
   ReplicaInPipeline(long blockId, long len, long genStamp,
-      FsVolumeSpi vol, File dir, Thread writer ) {
+      FsVolumeSpi vol, File dir, Thread writer, long bytesToReserve) {
     super( blockId, len, genStamp, vol, dir);
     this.bytesAcked = len;
     this.bytesOnDisk = len;
     this.writer = writer;
+    this.bytesReserved = bytesToReserve;
   }
 
   /**
@@ -96,6 +108,7 @@ public class ReplicaInPipeline extends ReplicaInfo
     this.bytesAcked = from.getBytesAcked();
     this.bytesOnDisk = from.getBytesOnDisk();
     this.writer = from.writer;
+    this.bytesReserved = from.bytesReserved;
   }
 
   @Override
@@ -115,13 +128,25 @@ public class ReplicaInPipeline extends ReplicaInfo
   
   @Override // ReplicaInPipelineInterface
   public void setBytesAcked(long bytesAcked) {
+    long newBytesAcked = bytesAcked - this.bytesAcked;
     this.bytesAcked = bytesAcked;
+
+    // Once bytes are ACK'ed we can release equivalent space from the
+    // volume's reservedForRbw count. We could have released it as soon
+    // as the write-to-disk completed but that would be inefficient.
+    getVolume().releaseReservedSpace(newBytesAcked);
+    bytesReserved -= newBytesAcked;
   }
   
   @Override // ReplicaInPipelineInterface
   public long getBytesOnDisk() {
     return bytesOnDisk;
   }
+
+  @Override
+  public long getBytesReserved() {
+    return bytesReserved;
+  }
   
   @Override // ReplicaInPipelineInterface
   public synchronized void setLastChecksumAndDataLen(long dataLength, byte[] lastChecksum) {

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

@@ -222,6 +222,13 @@ abstract public class ReplicaInfo extends Block implements Replica {
   public void setUnlinked() {
     // no need to be unlinked
   }
+
+  /**
+   * Number of bytes reserved for this replica on disk.
+   */
+  public long getBytesReserved() {
+    return 0;
+  }
   
    /**
    * Copy specified file into a temporary file. Then rename the

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

@@ -45,4 +45,15 @@ public interface FsVolumeSpi {
   public File getFinalizedDir(String bpid) throws IOException;
   
   public StorageType getStorageType();
+
+  /**
+   * Reserve disk space for an RBW block so a writer does not run out of
+   * space before the block is full.
+   */
+  public void reserveSpaceForRbw(long bytesToReserve);
+
+  /**
+   * Release disk space previously reserved for RBW block.
+   */
+  public void releaseReservedSpace(long bytesToRelease);
 }

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/BlockPoolSlice.java

@@ -240,7 +240,7 @@ class BlockPoolSlice {
     return DatanodeUtil.createTmpFile(b, f);
   }
 
-  File addBlock(Block b, File f) throws IOException {
+  File addFinalizedBlock(Block b, File f) throws IOException {
     File blockDir = DatanodeUtil.idToBlockDir(finalizedDir, b.getBlockId());
     if (!blockDir.exists()) {
       if (!blockDir.mkdirs()) {
@@ -334,9 +334,11 @@ class BlockPoolSlice {
           // The restart meta file exists
           if (sc.hasNextLong() && (sc.nextLong() > Time.now())) {
             // It didn't expire. Load the replica as a RBW.
+            // We don't know the expected block length, so just use 0
+            // and don't reserve any more space for writes.
             newReplica = new ReplicaBeingWritten(blockId,
                 validateIntegrityAndSetLength(file, genStamp),
-                genStamp, volume, file.getParentFile(), null);
+                genStamp, volume, file.getParentFile(), null, 0);
             loadRwr = false;
           }
           sc.close();

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java

@@ -593,7 +593,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
           + " from " + srcfile + " to " + dstfile.getAbsolutePath(), e);
     }
     if (LOG.isDebugEnabled()) {
-      LOG.debug("addBlock: Moved " + srcmeta + " to " + dstmeta
+      LOG.debug("addFinalizedBlock: Moved " + srcmeta + " to " + dstmeta
           + " and " + srcfile + " to " + dstfile);
     }
     return dstfile;
@@ -712,7 +712,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
     File oldmeta = replicaInfo.getMetaFile();
     ReplicaBeingWritten newReplicaInfo = new ReplicaBeingWritten(
         replicaInfo.getBlockId(), replicaInfo.getNumBytes(), newGS,
-        v, newBlkFile.getParentFile(), Thread.currentThread());
+        v, newBlkFile.getParentFile(), Thread.currentThread(), estimateBlockLen);
     File newmeta = newReplicaInfo.getMetaFile();
 
     // rename meta file to rbw directory
@@ -748,7 +748,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
     
     // Replace finalized replica by a RBW replica in replicas map
     volumeMap.add(bpid, newReplicaInfo);
-    
+    v.reserveSpaceForRbw(estimateBlockLen - replicaInfo.getNumBytes());
     return newReplicaInfo;
   }
 
@@ -876,7 +876,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
     // create a rbw file to hold block in the designated volume
     File f = v.createRbwFile(b.getBlockPoolId(), b.getLocalBlock());
     ReplicaBeingWritten newReplicaInfo = new ReplicaBeingWritten(b.getBlockId(), 
-        b.getGenerationStamp(), v, f.getParentFile());
+        b.getGenerationStamp(), v, f.getParentFile(), b.getNumBytes());
     volumeMap.add(b.getBlockPoolId(), newReplicaInfo);
     return newReplicaInfo;
   }
@@ -992,7 +992,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
     // create RBW
     final ReplicaBeingWritten rbw = new ReplicaBeingWritten(
         blockId, numBytes, expectedGs,
-        v, dest.getParentFile(), Thread.currentThread());
+        v, dest.getParentFile(), Thread.currentThread(), 0);
     rbw.setBytesAcked(visible);
     // overwrite the RBW in the volume map
     volumeMap.add(b.getBlockPoolId(), rbw);
@@ -1013,7 +1013,7 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
     // create a temporary file to hold block in the designated volume
     File f = v.createTmpFile(b.getBlockPoolId(), b.getLocalBlock());
     ReplicaInPipeline newReplicaInfo = new ReplicaInPipeline(b.getBlockId(), 
-        b.getGenerationStamp(), v, f.getParentFile());
+        b.getGenerationStamp(), v, f.getParentFile(), 0);
     volumeMap.add(b.getBlockPoolId(), newReplicaInfo);
     
     return newReplicaInfo;
@@ -1079,7 +1079,8 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
             " for block " + replicaInfo);
       }
 
-      File dest = v.addBlock(bpid, replicaInfo, f);
+      File dest = v.addFinalizedBlock(
+          bpid, replicaInfo, f, replicaInfo.getBytesReserved());
       newReplicaInfo = new FinalizedReplica(replicaInfo, v, dest.getParentFile());
     }
     volumeMap.add(bpid, newReplicaInfo);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java

@@ -28,6 +28,7 @@ import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
 
 import com.google.common.annotations.VisibleForTesting;
 import org.apache.hadoop.classification.InterfaceAudience;
@@ -62,6 +63,9 @@ public class FsVolumeImpl implements FsVolumeSpi {
   private final DF usage;           
   private final long reserved;
 
+  // Disk space reserved for open blocks.
+  private AtomicLong reservedForRbw;
+
   // Capacity configured. This is useful when we want to
   // limit the visible capacity for tests. If negative, then we just
   // query from the filesystem.
@@ -82,6 +86,7 @@ public class FsVolumeImpl implements FsVolumeSpi {
     this.reserved = conf.getLong(
         DFSConfigKeys.DFS_DATANODE_DU_RESERVED_KEY,
         DFSConfigKeys.DFS_DATANODE_DU_RESERVED_DEFAULT);
+    this.reservedForRbw = new AtomicLong(0L);
     this.currentDir = currentDir; 
     File parent = currentDir.getParentFile();
     this.usage = new DF(parent, conf);
@@ -166,13 +171,18 @@ public class FsVolumeImpl implements FsVolumeSpi {
 
   @Override
   public long getAvailable() throws IOException {
-    long remaining = getCapacity()-getDfsUsed();
+    long remaining = getCapacity() - getDfsUsed() - reservedForRbw.get();
     long available = usage.getAvailable();
     if (remaining > available) {
       remaining = available;
     }
     return (remaining > 0) ? remaining : 0;
   }
+
+  @VisibleForTesting
+  public long getReservedForRbw() {
+    return reservedForRbw.get();
+  }
     
   long getReserved(){
     return reserved;
@@ -217,16 +227,58 @@ public class FsVolumeImpl implements FsVolumeSpi {
     return getBlockPoolSlice(bpid).createTmpFile(b);
   }
 
+  @Override
+  public void reserveSpaceForRbw(long bytesToReserve) {
+    if (bytesToReserve != 0) {
+      if (FsDatasetImpl.LOG.isDebugEnabled()) {
+        FsDatasetImpl.LOG.debug("Reserving " + bytesToReserve + " on volume " + getBasePath());
+      }
+      reservedForRbw.addAndGet(bytesToReserve);
+    }
+  }
+
+  @Override
+  public void releaseReservedSpace(long bytesToRelease) {
+    if (bytesToRelease != 0) {
+      if (FsDatasetImpl.LOG.isDebugEnabled()) {
+        FsDatasetImpl.LOG.debug("Releasing " + bytesToRelease + " on volume " + getBasePath());
+      }
+
+      long oldReservation, newReservation;
+      do {
+        oldReservation = reservedForRbw.get();
+        newReservation = oldReservation - bytesToRelease;
+        if (newReservation < 0) {
+          // Failsafe, this should never occur in practice, but if it does we don't
+          // want to start advertising more space than we have available.
+          newReservation = 0;
+        }
+      } while (!reservedForRbw.compareAndSet(oldReservation, newReservation));
+    }
+  }
+
   /**
    * RBW files. They get moved to the finalized block directory when
    * the block is finalized.
    */
   File createRbwFile(String bpid, Block b) throws IOException {
+    reserveSpaceForRbw(b.getNumBytes());
     return getBlockPoolSlice(bpid).createRbwFile(b);
   }
 
-  File addBlock(String bpid, Block b, File f) throws IOException {
-    return getBlockPoolSlice(bpid).addBlock(b, f);
+  /**
+   *
+   * @param bytesReservedForRbw Space that was reserved during
+   *     block creation. Now that the block is being finalized we
+   *     can free up this space.
+   * @return
+   * @throws IOException
+   */
+  File addFinalizedBlock(String bpid, Block b,
+                         File f, long bytesReservedForRbw)
+      throws IOException {
+    releaseReservedSpace(bytesReservedForRbw);
+    return getBlockPoolSlice(bpid).addFinalizedBlock(b, f);
   }
 
   Executor getCacheExecutor() {

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

@@ -978,7 +978,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     return Collections.unmodifiableList(auditLoggers);
   }
 
-  private void loadFSImage(StartupOption startOpt) throws IOException {
+  protected void loadFSImage(StartupOption startOpt) throws IOException {
     final FSImage fsImage = getFSImage();
 
     // format before starting up if requested
@@ -1026,7 +1026,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     imageLoadComplete();
   }
 
-  private void startSecretManager() {
+  protected void startSecretManager() {
     if (dtSecretManager != null) {
       try {
         dtSecretManager.startThreads();
@@ -1038,7 +1038,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     }
   }
   
-  private void startSecretManagerIfNecessary() {
+  protected void startSecretManagerIfNecessary() {
     boolean shouldRun = shouldUseDelegationTokens() &&
       !isInSafeMode() && getEditLog().isOpenForWrite();
     boolean running = dtSecretManager.isRunning();
@@ -1188,7 +1188,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     return haEnabled && inActiveState() && startingActiveService;
   }
 
-  private boolean shouldUseDelegationTokens() {
+  protected boolean shouldUseDelegationTokens() {
     return UserGroupInformation.isSecurityEnabled() ||
       alwaysUseDelegationTokensForTests;
   }
@@ -2729,6 +2729,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
    * @throws UnresolvedLinkException
    * @throws IOException
    */
+  protected
   LocatedBlock prepareFileForWrite(String src, INodeFile file,
                                    String leaseHolder, String clientMachine,
                                    boolean writeToEditLog,
@@ -3185,6 +3186,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     return new FileState(pendingFile, src);
   }
 
+  protected
   LocatedBlock makeLocatedBlock(Block blk, DatanodeStorageInfo[] locs,
                                         long offset) throws IOException {
     LocatedBlock lBlk = new LocatedBlock(
@@ -3302,8 +3304,8 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     return true;
   }
 
-  private INodeFile checkLease(String src, String holder, INode inode,
-                               long fileId)
+  protected INodeFile checkLease(String src, String holder, INode inode,
+                                 long fileId)
       throws LeaseExpiredException, FileNotFoundException {
     assert hasReadLock();
     final String ident = src + " (inode " + fileId + ")";
@@ -4420,7 +4422,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     return leaseManager.reassignLease(lease, src, newHolder);
   }
 
-  private void commitOrCompleteLastBlock(final INodeFile fileINode,
+  protected void commitOrCompleteLastBlock(final INodeFile fileINode,
       final Block commitBlock) throws IOException {
     assert hasWriteLock();
     Preconditions.checkArgument(fileINode.isUnderConstruction());
@@ -4816,6 +4818,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
    * @return an array of datanode commands 
    * @throws IOException
    */
+  protected
   HeartbeatResponse handleHeartbeat(DatanodeRegistration nodeReg,
       StorageReport[] reports, long cacheCapacity, long cacheUsed,
       int xceiverCount, int xmitsInProgress, int failedVolumes)
@@ -4865,8 +4868,8 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
    * @param file
    * @param logRetryCache
    */
-  private void persistBlocks(String path, INodeFile file,
-                             boolean logRetryCache) {
+  protected void persistBlocks(String path, INodeFile file,
+                               boolean logRetryCache) {
     assert hasWriteLock();
     Preconditions.checkArgument(file.isUnderConstruction());
     getEditLog().logUpdateBlocks(path, file, logRetryCache);
@@ -5297,7 +5300,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
    * @param path
    * @param file
    */
-  private void persistNewBlock(String path, INodeFile file) {
+  protected void persistNewBlock(String path, INodeFile file) {
     Preconditions.checkArgument(file.isUnderConstruction());
     getEditLog().logAddBlock(path, file);
     if (NameNode.stateChangeLog.isDebugEnabled()) {
@@ -7175,7 +7178,7 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
    * 
    * @return true if delegation token operation is allowed
    */
-  private boolean isAllowedDelegationTokenOp() throws IOException {
+  protected boolean isAllowedDelegationTokenOp() throws IOException {
     AuthenticationMethod authMethod = getConnectionAuthenticationMethod();
     if (UserGroupInformation.isSecurityEnabled()
         && (authMethod != AuthenticationMethod.KERBEROS)
@@ -7342,7 +7345,13 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
     final List<DatanodeDescriptor> live = new ArrayList<DatanodeDescriptor>();
     blockManager.getDatanodeManager().fetchDatanodes(live, null, true);
     for (DatanodeDescriptor node : live) {
-      Map<String, Object> innerinfo = ImmutableMap.<String, Object>builder()
+      info.put(node.getHostName(), getLiveNodeInfo(node));
+    }
+    return JSON.toString(info);
+  }
+
+  protected Map<String, Object> getLiveNodeInfo(DatanodeDescriptor node) {
+    return ImmutableMap.<String, Object>builder()
           .put("infoAddr", node.getInfoAddr())
           .put("infoSecureAddr", node.getInfoSecureAddr())
           .put("xferaddr", node.getXferAddr())
@@ -7360,10 +7369,6 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
           .put("blockPoolUsedPercent", node.getBlockPoolUsedPercent())
           .put("volfails", node.getVolumeFailures())
           .build();
-
-      info.put(node.getHostName(), innerinfo);
-    }
-    return JSON.toString(info);
   }
 
   /**
@@ -7648,17 +7653,16 @@ public class FSNamesystem implements Namesystem, FSClusterStats,
   public ReentrantLock getLongReadLockForTests() {
     return fsLock.longReadLock;
   }
-
-  @VisibleForTesting
-  public SafeModeInfo getSafeModeInfoForTests() {
-    return safeMode;
-  }
   
   @VisibleForTesting
   public void setNNResourceChecker(NameNodeResourceChecker nnResourceChecker) {
     this.nnResourceChecker = nnResourceChecker;
   }
 
+  public SafeModeInfo getSafeModeInfo() {
+    return safeMode;
+  }
+
   @Override
   public boolean isAvoidingStaleDataNodesForWrite() {
     return this.blockManager.getDatanodeManager()

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java

@@ -352,6 +352,40 @@ public class DFSAdmin extends FsShell {
     }
   }
 
+  /**
+   * Common usage summary shared between "hdfs dfsadmin -help" and
+   * "hdfs dfsadmin"
+   */
+  private static final String commonUsageSummary =
+    "\t[-report [-live] [-dead] [-decommissioning]]\n" +
+    "\t[-safemode <enter | leave | get | wait>]\n" +
+    "\t[-saveNamespace]\n" +
+    "\t[-rollEdits]\n" +
+    "\t[-restoreFailedStorage true|false|check]\n" +
+    "\t[-refreshNodes]\n" +
+    "\t[" + SetQuotaCommand.USAGE + "]\n" +
+    "\t[" + ClearQuotaCommand.USAGE +"]\n" +
+    "\t[" + SetSpaceQuotaCommand.USAGE + "]\n" +
+    "\t[" + ClearSpaceQuotaCommand.USAGE +"]\n" +
+    "\t[-finalizeUpgrade]\n" +
+    "\t[" + RollingUpgradeCommand.USAGE +"]\n" +
+    "\t[-refreshServiceAcl]\n" +
+    "\t[-refreshUserToGroupsMappings]\n" +
+    "\t[-refreshSuperUserGroupsConfiguration]\n" +
+    "\t[-refreshCallQueue]\n" +
+    "\t[-refresh <host:ipc_port> <key> [arg1..argn]\n" +
+    "\t[-printTopology]\n" +
+    "\t[-refreshNamenodes datanode_host:ipc_port]\n"+
+    "\t[-deleteBlockPool datanode_host:ipc_port blockpoolId [force]]\n"+
+    "\t[-setBalancerBandwidth <bandwidth in bytes per second>]\n" +
+    "\t[-fetchImage <local directory>]\n" +
+    "\t[-allowSnapshot <snapshotDir>]\n" +
+    "\t[-disallowSnapshot <snapshotDir>]\n" +
+    "\t[-shutdownDatanode <datanode_host:ipc_port> [upgrade]]\n" +
+    "\t[-getDatanodeInfo <datanode_host:ipc_port>]\n" +
+    "\t[-metasave filename]\n" +
+    "\t[-help [cmd]]\n";
+
   /**
    * Construct a DFSAdmin object.
    */
@@ -589,7 +623,7 @@ public class DFSAdmin extends FsShell {
   
   /**
    * Command to ask the namenode to save the namespace.
-   * Usage: java DFSAdmin -saveNamespace
+   * Usage: hdfs dfsadmin -saveNamespace
    * @exception IOException 
    * @see org.apache.hadoop.hdfs.protocol.ClientProtocol#saveNamespace()
    */
@@ -630,7 +664,7 @@ public class DFSAdmin extends FsShell {
   
   /**
    * Command to enable/disable/check restoring of failed storage replicas in the namenode.
-   * Usage: java DFSAdmin -restoreFailedStorage true|false|check
+   * Usage: hdfs dfsadmin -restoreFailedStorage true|false|check
    * @exception IOException 
    * @see org.apache.hadoop.hdfs.protocol.ClientProtocol#restoreFailedStorage(String arg)
    */
@@ -668,7 +702,7 @@ public class DFSAdmin extends FsShell {
   /**
    * Command to ask the namenode to reread the hosts and excluded hosts 
    * file.
-   * Usage: java DFSAdmin -refreshNodes
+   * Usage: hdfs dfsadmin -refreshNodes
    * @exception IOException 
    */
   public int refreshNodes() throws IOException {
@@ -701,7 +735,7 @@ public class DFSAdmin extends FsShell {
   /**
    * Command to ask the namenode to set the balancer bandwidth for all of the
    * datanodes.
-   * Usage: java DFSAdmin -setBalancerBandwidth bandwidth
+   * Usage: hdfs dfsadmin -setBalancerBandwidth bandwidth
    * @param argv List of of command line parameters.
    * @param idx The index of the command that is being processed.
    * @exception IOException 
@@ -714,7 +748,7 @@ public class DFSAdmin extends FsShell {
       bandwidth = Long.parseLong(argv[idx]);
     } catch (NumberFormatException nfe) {
       System.err.println("NumberFormatException: " + nfe.getMessage());
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                   + " [-setBalancerBandwidth <bandwidth in bytes per second>]");
       return exitCode;
     }
@@ -777,36 +811,11 @@ public class DFSAdmin extends FsShell {
   }
 
   private void printHelp(String cmd) {
-    String summary = "hadoop dfsadmin performs DFS administrative commands.\n" +
+    String summary = "hdfs dfsadmin performs DFS administrative commands.\n" +
+      "Note: Administrative commands can only be run with superuser permission.\n" +
       "The full syntax is: \n\n" +
-      "hadoop dfsadmin\n" +
-      "\t[-report [-live] [-dead] [-decommissioning]]\n" +
-      "\t[-safemode <enter | leave | get | wait>]\n" +
-      "\t[-saveNamespace]\n" +
-      "\t[-rollEdits]\n" +
-      "\t[-restoreFailedStorage true|false|check]\n" +
-      "\t[-refreshNodes]\n" +
-      "\t[" + SetQuotaCommand.USAGE + "]\n" +
-      "\t[" + ClearQuotaCommand.USAGE +"]\n" +
-      "\t[" + SetSpaceQuotaCommand.USAGE + "]\n" +
-      "\t[" + ClearSpaceQuotaCommand.USAGE +"]\n" +
-      "\t[-finalizeUpgrade]\n" +
-      "\t[" + RollingUpgradeCommand.USAGE +"]\n" +
-      "\t[-refreshServiceAcl]\n" +
-      "\t[-refreshUserToGroupsMappings]\n" +
-      "\t[-refreshSuperUserGroupsConfiguration]\n" +
-      "\t[-refreshCallQueue]\n" +
-      "\t[-refresh <host:ipc_port> <key> [arg1..argn]\n" +
-      "\t[-printTopology]\n" +
-      "\t[-refreshNamenodes datanodehost:port]\n"+
-      "\t[-deleteBlockPool datanodehost:port blockpoolId [force]]\n"+
-      "\t[-setBalancerBandwidth <bandwidth>]\n" +
-      "\t[-fetchImage <local directory>]\n" +
-      "\t[-allowSnapshot <snapshotDir>]\n" +
-      "\t[-disallowSnapshot <snapshotDir>]\n" +
-      "\t[-shutdownDatanode <datanode_host:ipc_port> [upgrade]]\n" +
-      "\t[-getDatanodeInfo <datanode_host:ipc_port>\n" +
-      "\t[-help [cmd]]\n";
+      "hdfs dfsadmin\n" +
+      commonUsageSummary;
 
     String report ="-report [-live] [-dead] [-decommissioning]:\n" +
       "\tReports basic filesystem information and statistics.\n" +
@@ -825,15 +834,13 @@ public class DFSAdmin extends FsShell {
 
     String saveNamespace = "-saveNamespace:\t" +
     "Save current namespace into storage directories and reset edits log.\n" +
-    "\t\tRequires superuser permissions and safe mode.\n";
+    "\t\tRequires safe mode.\n";
 
     String rollEdits = "-rollEdits:\t" +
-    "Rolls the edit log.\n" +
-    "\t\tRequires superuser permissions.\n";
+    "Rolls the edit log.\n";
     
     String restoreFailedStorage = "-restoreFailedStorage:\t" +
-    "Set/Unset/Check flag to attempt restore of failed storage replicas if they become available.\n" +
-    "\t\tRequires superuser permissions.\n";
+    "Set/Unset/Check flag to attempt restore of failed storage replicas if they become available.\n";
     
     String refreshNodes = "-refreshNodes: \tUpdates the namenode with the " +
       "set of datanodes allowed to connect to the namenode.\n\n" +
@@ -1021,7 +1028,7 @@ public class DFSAdmin extends FsShell {
 
   /**
    * Command to ask the namenode to finalize previously performed upgrade.
-   * Usage: java DFSAdmin -finalizeUpgrade
+   * Usage: hdfs dfsadmin -finalizeUpgrade
    * @exception IOException 
    */
   public int finalizeUpgrade() throws IOException {
@@ -1058,7 +1065,7 @@ public class DFSAdmin extends FsShell {
 
   /**
    * Dumps DFS data structures into specified file.
-   * Usage: java DFSAdmin -metasave filename
+   * Usage: hdfs dfsadmin -metasave filename
    * @param argv List of of command line parameters.
    * @param idx The index of the command that is being processed.
    * @exception IOException if an error occurred while accessing
@@ -1366,118 +1373,90 @@ public class DFSAdmin extends FsShell {
    */
   private static void printUsage(String cmd) {
     if ("-report".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-report] [-live] [-dead] [-decommissioning]");
     } else if ("-safemode".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-safemode enter | leave | get | wait]");
     } else if ("-allowSnapshot".equalsIgnoreCase(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-allowSnapshot <snapshotDir>]");
     } else if ("-disallowSnapshot".equalsIgnoreCase(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-disallowSnapshot <snapshotDir>]");
     } else if ("-saveNamespace".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-saveNamespace]");
     } else if ("-rollEdits".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-rollEdits]");
     } else if ("-restoreFailedStorage".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-restoreFailedStorage true|false|check ]");
     } else if ("-refreshNodes".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-refreshNodes]");
     } else if ("-finalizeUpgrade".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-finalizeUpgrade]");
     } else if (RollingUpgradeCommand.matches(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [" + RollingUpgradeCommand.USAGE+"]");
     } else if ("-metasave".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-metasave filename]");
     } else if (SetQuotaCommand.matches(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [" + SetQuotaCommand.USAGE+"]");
     } else if (ClearQuotaCommand.matches(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " ["+ClearQuotaCommand.USAGE+"]");
     } else if (SetSpaceQuotaCommand.matches(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [" + SetSpaceQuotaCommand.USAGE+"]");
     } else if (ClearSpaceQuotaCommand.matches(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " ["+ClearSpaceQuotaCommand.USAGE+"]");
     } else if ("-refreshServiceAcl".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-refreshServiceAcl]");
     } else if ("-refreshUserToGroupsMappings".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-refreshUserToGroupsMappings]");
     } else if ("-refreshSuperUserGroupsConfiguration".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-refreshSuperUserGroupsConfiguration]");
     } else if ("-refreshCallQueue".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-refreshCallQueue]");
     } else if ("-refresh".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-refresh <hostname:port> <resource_identifier> [arg1..argn]");
     } else if ("-printTopology".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-printTopology]");
     } else if ("-refreshNamenodes".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                          + " [-refreshNamenodes datanode-host:port]");
     } else if ("-deleteBlockPool".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-deleteBlockPool datanode-host:port blockpoolId [force]]");
     } else if ("-setBalancerBandwidth".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
                   + " [-setBalancerBandwidth <bandwidth in bytes per second>]");
     } else if ("-fetchImage".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-fetchImage <local directory>]");
     } else if ("-shutdownDatanode".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-shutdownDatanode <datanode_host:ipc_port> [upgrade]]");
     } else if ("-getDatanodeInfo".equals(cmd)) {
-      System.err.println("Usage: java DFSAdmin"
+      System.err.println("Usage: hdfs dfsadmin"
           + " [-getDatanodeInfo <datanode_host:ipc_port>]");
     } else {
-      System.err.println("Usage: java DFSAdmin");
+      System.err.println("Usage: hdfs dfsadmin");
       System.err.println("Note: Administrative commands can only be run as the HDFS superuser.");
-      System.err.println("           [-report]");
-      System.err.println("           [-safemode enter | leave | get | wait]"); 
-      System.err.println("           [-allowSnapshot <snapshotDir>]");
-      System.err.println("           [-disallowSnapshot <snapshotDir>]");
-      System.err.println("           [-saveNamespace]");
-      System.err.println("           [-rollEdits]");
-      System.err.println("           [-restoreFailedStorage true|false|check]");
-      System.err.println("           [-refreshNodes]");
-      System.err.println("           [-finalizeUpgrade]");
-      System.err.println("           ["+RollingUpgradeCommand.USAGE+"]");
-      System.err.println("           [-metasave filename]");
-      System.err.println("           [-refreshServiceAcl]");
-      System.err.println("           [-refreshUserToGroupsMappings]");
-      System.err.println("           [-refreshSuperUserGroupsConfiguration]");
-      System.err.println("           [-refreshCallQueue]");
-      System.err.println("           [-refresh]");
-      System.err.println("           [-printTopology]");
-      System.err.println("           [-refreshNamenodes datanodehost:port]");
-      System.err.println("           [-deleteBlockPool datanode-host:port blockpoolId [force]]");
-      System.err.println("           ["+SetQuotaCommand.USAGE+"]");
-      System.err.println("           ["+ClearQuotaCommand.USAGE+"]");
-      System.err.println("           ["+SetSpaceQuotaCommand.USAGE+"]");
-      System.err.println("           ["+ClearSpaceQuotaCommand.USAGE+"]");      
-      System.err.println("           [-setBalancerBandwidth <bandwidth in bytes per second>]");
-      System.err.println("           [-fetchImage <local directory>]");
-      System.err.println("           [-shutdownDatanode <datanode_host:ipc_port> [upgrade]]");
-      System.err.println("           [-getDatanodeInfo <datanode_host:ipc_port>]");
-      System.err.println("           [-help [cmd]]");
-      System.err.println();
+      System.err.println(commonUsageSummary);
       ToolRunner.printGenericCommandUsage(System.err);
     }
   }

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

@@ -34,6 +34,7 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.crypto.CipherSuite;
 import org.apache.hadoop.crypto.key.JavaKeyStoreProvider;
 import org.apache.hadoop.crypto.key.KeyProvider;
+import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension;
 import org.apache.hadoop.crypto.key.KeyProviderFactory;
 import org.apache.hadoop.fs.FSTestWrapper;
 import org.apache.hadoop.fs.FileContext;
@@ -51,12 +52,22 @@ import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
 import org.apache.hadoop.hdfs.server.namenode.EncryptionFaultInjector;
 import org.apache.hadoop.hdfs.server.namenode.EncryptionZoneManager;
 import org.apache.hadoop.security.AccessControlException;
+import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.security.token.Token;
+import org.apache.hadoop.crypto.key.KeyProviderDelegationTokenExtension.DelegationTokenExtension;
+import org.apache.hadoop.crypto.key.KeyProviderCryptoExtension.CryptoExtension;
+import org.apache.hadoop.io.Text;
 import org.apache.log4j.Level;
 import org.apache.log4j.Logger;
 import org.junit.After;
+import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
+import org.mockito.Mockito;
+import static org.mockito.Mockito.withSettings;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.anyString;
 
 import static org.apache.hadoop.hdfs.DFSTestUtil.verifyFilesEqual;
 import static org.apache.hadoop.test.GenericTestUtils.assertExceptionContains;
@@ -91,6 +102,7 @@ public class TestEncryptionZones {
     conf.set(KeyProviderFactory.KEY_PROVIDER_PATH,
         JavaKeyStoreProvider.SCHEME_NAME + "://file" + testRootDir + "/test.jks"
     );
+    conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_DELEGATION_TOKEN_ALWAYS_USE_KEY, true);
     // Lower the batch size for testing
     conf.setInt(DFSConfigKeys.DFS_NAMENODE_LIST_ENCRYPTION_ZONES_NUM_RESPONSES,
         2);
@@ -753,4 +765,35 @@ public class TestEncryptionZones {
           e.getCause());
     }
   }
+
+  /**
+   * Tests obtaining delegation token from stored key
+   */
+  @Test(timeout = 120000)
+  public void testDelegationToken() throws Exception {
+    UserGroupInformation.createRemoteUser("JobTracker");
+    DistributedFileSystem dfs = cluster.getFileSystem();
+    KeyProviderCryptoExtension keyProvider = Mockito.mock(KeyProviderCryptoExtension.class,
+        withSettings().extraInterfaces(
+            DelegationTokenExtension.class,
+            CryptoExtension.class));
+    Mockito.when(keyProvider.getConf()).thenReturn(conf);
+    byte[] testIdentifier = "Test identifier for delegation token".getBytes();
+
+    Token<?> testToken = new Token(testIdentifier, new byte[0],
+        new Text(), new Text());
+    Mockito.when(((DelegationTokenExtension)keyProvider).
+        addDelegationTokens(anyString(), (Credentials)any())).
+        thenReturn(new Token<?>[] { testToken });
+
+    dfs.getClient().provider = keyProvider;
+
+    Credentials creds = new Credentials();
+    final Token<?> tokens[] = dfs.addDelegationTokens("JobTracker", creds);
+    DistributedFileSystem.LOG.debug("Delegation tokens: " +
+        Arrays.asList(tokens));
+    Assert.assertEquals(2, tokens.length);
+    Assert.assertEquals(tokens[1], testToken);
+    Assert.assertEquals(1, creds.numberOfTokens());
+  }
 }

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

@@ -17,14 +17,6 @@
  */
 package org.apache.hadoop.hdfs;
 
-import static org.apache.hadoop.hdfs.server.common.Util.fileAsURI;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-
-import java.io.File;
-import java.io.IOException;
-import java.net.UnknownHostException;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -39,6 +31,14 @@ import org.apache.hadoop.net.DNS;
 import org.apache.hadoop.test.PathUtils;
 import org.junit.Test;
 
+import java.io.File;
+import java.io.IOException;
+import java.net.UnknownHostException;
+
+import static org.apache.hadoop.hdfs.server.common.Util.fileAsURI;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 /**
  * This test checks correctness of port usage by hdfs components:
  * NameNode, DataNode, SecondaryNamenode and BackupNode.
@@ -245,7 +245,7 @@ public class TestHDFSServerPorts {
     return true;
   }
 
-  @Test
+  @Test(timeout = 300000)
   public void testNameNodePorts() throws Exception {
     runTestNameNodePorts(false);
     runTestNameNodePorts(true);
@@ -296,7 +296,7 @@ public class TestHDFSServerPorts {
   /**
    * Verify datanode port usage.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testDataNodePorts() throws Exception {
     NameNode nn = null;
     try {
@@ -332,7 +332,7 @@ public class TestHDFSServerPorts {
   /**
    * Verify secondary namenode port usage.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testSecondaryNodePorts() throws Exception {
     NameNode nn = null;
     try {
@@ -361,7 +361,7 @@ public class TestHDFSServerPorts {
     /**
      * Verify BackupNode port usage.
      */
-  @Test
+    @Test(timeout = 300000)
     public void testBackupNodePorts() throws Exception {
       NameNode nn = null;
       try {

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDirectoryScanner.java

@@ -424,6 +424,14 @@ public class TestDirectoryScanner {
     public String getStorageID() {
       return "";
     }
+
+    @Override
+    public void reserveSpaceForRbw(long bytesToReserve) {
+    }
+
+    @Override
+    public void releaseReservedSpace(long bytesToRelease) {
+    }
   }
 
   private final static TestFsVolumeSpi TEST_VOLUME = new TestFsVolumeSpi();

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestRbwSpaceReservation.java

@@ -0,0 +1,288 @@
+/**
+ * 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.hdfs.server.datanode.fsdataset.impl;
+
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.commons.logging.impl.Log4JLogger;
+import org.apache.hadoop.conf.Configuration;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.*;
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThat;
+
+import org.apache.hadoop.fs.DU;
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hdfs.*;
+import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
+import org.apache.hadoop.test.GenericTestUtils;
+import org.apache.hadoop.util.Daemon;
+import org.apache.log4j.Level;
+import org.junit.After;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Random;
+
+/**
+ * Ensure that the DN reserves disk space equivalent to a full block for
+ * replica being written (RBW).
+ */
+public class TestRbwSpaceReservation {
+  static final Log LOG = LogFactory.getLog(TestRbwSpaceReservation.class);
+
+  private static final short REPL_FACTOR = 1;
+  private static final int DU_REFRESH_INTERVAL_MSEC = 500;
+  private static final int STORAGES_PER_DATANODE = 1;
+  private static final int BLOCK_SIZE = 1024 * 1024;
+  private static final int SMALL_BLOCK_SIZE = 1024;
+
+  protected MiniDFSCluster cluster;
+  private Configuration conf;
+  private DistributedFileSystem fs = null;
+  private DFSClient client = null;
+  FsVolumeImpl singletonVolume = null;
+
+  private static Random rand = new Random();
+
+  private void initConfig(int blockSize) {
+    conf = new HdfsConfiguration();
+
+    // Refresh disk usage information frequently.
+    conf.setInt(FS_DU_INTERVAL_KEY, DU_REFRESH_INTERVAL_MSEC);
+    conf.setLong(DFS_BLOCK_SIZE_KEY, blockSize);
+
+    // Disable the scanner
+    conf.setInt(DFS_DATANODE_SCAN_PERIOD_HOURS_KEY, -1);
+  }
+
+  static {
+    ((Log4JLogger) FsDatasetImpl.LOG).getLogger().setLevel(Level.ALL);
+  }
+
+  private void startCluster(int blockSize, long perVolumeCapacity) throws IOException {
+    initConfig(blockSize);
+
+    cluster = new MiniDFSCluster
+        .Builder(conf)
+        .storagesPerDatanode(STORAGES_PER_DATANODE)
+        .numDataNodes(REPL_FACTOR)
+        .build();
+    fs = cluster.getFileSystem();
+    client = fs.getClient();
+    cluster.waitActive();
+
+    if (perVolumeCapacity >= 0) {
+      List<? extends FsVolumeSpi> volumes =
+          cluster.getDataNodes().get(0).getFSDataset().getVolumes();
+
+      assertThat(volumes.size(), is(1));
+      singletonVolume = ((FsVolumeImpl) volumes.get(0));
+      singletonVolume.setCapacityForTesting(perVolumeCapacity);
+    }
+  }
+
+  @After
+  public void shutdownCluster() throws IOException {
+    if (client != null) {
+      client.close();
+      client = null;
+    }
+
+    if (fs != null) {
+      fs.close();
+      fs = null;
+    }
+
+    if (cluster != null) {
+      cluster.shutdown();
+      cluster = null;
+    }
+  }
+
+  private void createFileAndTestSpaceReservation(
+      final String fileNamePrefix, final int fileBlockSize)
+      throws IOException, InterruptedException {
+    // Enough for 1 block + meta files + some delta.
+    final long configuredCapacity = fileBlockSize * 2 - 1;
+    startCluster(BLOCK_SIZE, configuredCapacity);
+    FSDataOutputStream out = null;
+    Path path = new Path("/" + fileNamePrefix + ".dat");
+
+    try {
+      out = fs.create(path, false, 4096, (short) 1, fileBlockSize);
+
+      byte[] buffer = new byte[rand.nextInt(fileBlockSize / 4)];
+      out.write(buffer);
+      out.hsync();
+      int bytesWritten = buffer.length;
+
+      // Check that space was reserved for a full block minus the bytesWritten.
+      assertThat(singletonVolume.getReservedForRbw(),
+                 is((long) fileBlockSize - bytesWritten));
+      out.close();
+      out = null;
+
+      // Check that the reserved space has been released since we closed the
+      // file.
+      assertThat(singletonVolume.getReservedForRbw(), is(0L));
+
+      // Reopen the file for appends and write 1 more byte.
+      out = fs.append(path);
+      out.write(buffer);
+      out.hsync();
+      bytesWritten += buffer.length;
+
+      // Check that space was again reserved for a full block minus the
+      // bytesWritten so far.
+      assertThat(singletonVolume.getReservedForRbw(),
+                 is((long) fileBlockSize - bytesWritten));
+
+      // Write once again and again verify the available space. This ensures
+      // that the reserved space is progressively adjusted to account for bytes
+      // written to disk.
+      out.write(buffer);
+      out.hsync();
+      bytesWritten += buffer.length;
+      assertThat(singletonVolume.getReservedForRbw(),
+                 is((long) fileBlockSize - bytesWritten));
+    } finally {
+      if (out != null) {
+        out.close();
+      }
+    }
+  }
+
+  @Test (timeout=300000)
+  public void testWithDefaultBlockSize()
+      throws IOException, InterruptedException {
+    createFileAndTestSpaceReservation(GenericTestUtils.getMethodName(), BLOCK_SIZE);
+  }
+
+  @Test (timeout=300000)
+  public void testWithNonDefaultBlockSize()
+      throws IOException, InterruptedException {
+    // Same test as previous one, but with a non-default block size.
+    createFileAndTestSpaceReservation(GenericTestUtils.getMethodName(), BLOCK_SIZE * 2);
+  }
+
+  /**
+   * Stress test to ensure we are not leaking reserved space.
+   * @throws IOException
+   * @throws InterruptedException
+   */
+  @Test (timeout=600000)
+  public void stressTest() throws IOException, InterruptedException {
+    final int numWriters = 5;
+    startCluster(SMALL_BLOCK_SIZE, SMALL_BLOCK_SIZE * numWriters * 10);
+    Writer[] writers = new Writer[numWriters];
+
+    // Start a few writers and let them run for a while.
+    for (int i = 0; i < numWriters; ++i) {
+      writers[i] = new Writer(client, SMALL_BLOCK_SIZE);
+      writers[i].start();
+    }
+
+    Thread.sleep(60000);
+
+    // Stop the writers.
+    for (Writer w : writers) {
+      w.stopWriter();
+    }
+    int filesCreated = 0;
+    int numFailures = 0;
+    for (Writer w : writers) {
+      w.join();
+      filesCreated += w.getFilesCreated();
+      numFailures += w.getNumFailures();
+    }
+
+    LOG.info("Stress test created " + filesCreated +
+             " files and hit " + numFailures + " failures");
+
+    // Check no space was leaked.
+    assertThat(singletonVolume.getReservedForRbw(), is(0L));
+  }
+
+  private static class Writer extends Daemon {
+    private volatile boolean keepRunning;
+    private final DFSClient localClient;
+    private int filesCreated = 0;
+    private int numFailures = 0;
+    byte[] data;
+
+    Writer(DFSClient client, int blockSize) throws IOException {
+      localClient = client;
+      keepRunning = true;
+      filesCreated = 0;
+      numFailures = 0;
+
+      // At least some of the files should span a block boundary.
+      data = new byte[blockSize * 2];
+    }
+
+    @Override
+    public void run() {
+      /**
+       * Create a file, write up to 3 blocks of data and close the file.
+       * Do this in a loop until we are told to stop.
+       */
+      while (keepRunning) {
+        OutputStream os = null;
+        try {
+          String filename = "/file-" + rand.nextLong();
+          os = localClient.create(filename, false);
+          os.write(data, 0, rand.nextInt(data.length));
+          IOUtils.closeQuietly(os);
+          os = null;
+          localClient.delete(filename, false);
+          Thread.sleep(50);     // Sleep for a bit to avoid killing the system.
+          ++filesCreated;
+        } catch (IOException ioe) {
+          // Just ignore the exception and keep going.
+          ++numFailures;
+        } catch (InterruptedException ie) {
+          return;
+        } finally {
+          if (os != null) {
+            IOUtils.closeQuietly(os);
+          }
+        }
+      }
+    }
+
+    public void stopWriter() {
+      keepRunning = false;
+    }
+
+    public int getFilesCreated() {
+      return filesCreated;
+    }
+
+    public int getNumFailures() {
+      return numFailures;
+    }
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestWriteToReplica.java

@@ -158,7 +158,7 @@ public class TestWriteToReplica {
     replicasMap.add(bpid, new ReplicaInPipeline(
         blocks[TEMPORARY].getBlockId(),
         blocks[TEMPORARY].getGenerationStamp(), vol, 
-        vol.createTmpFile(bpid, blocks[TEMPORARY].getLocalBlock()).getParentFile()));
+        vol.createTmpFile(bpid, blocks[TEMPORARY].getLocalBlock()).getParentFile(), 0));
     
     replicaInfo = new ReplicaBeingWritten(blocks[RBW].getLocalBlock(), vol, 
         vol.createRbwFile(bpid, blocks[RBW].getLocalBlock()).getParentFile(), null);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NameNodeAdapter.java

@@ -223,7 +223,7 @@ public class NameNodeAdapter {
    * if safemode is not running.
    */
   public static int getSafeModeSafeBlocks(NameNode nn) {
-    SafeModeInfo smi = nn.getNamesystem().getSafeModeInfoForTests();
+    SafeModeInfo smi = nn.getNamesystem().getSafeModeInfo();
     if (smi == null) {
       return -1;
     }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestValidateConfigurationSettings.java

@@ -17,11 +17,6 @@
  */
 package org.apache.hadoop.hdfs.server.namenode;
 
-import java.io.File;
-import java.io.IOException;
-import java.net.BindException;
-import java.util.Random;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.FileUtil;
@@ -33,6 +28,11 @@ import org.apache.hadoop.test.GenericTestUtils;
 import org.junit.After;
 import org.junit.Test;
 
+import java.io.File;
+import java.io.IOException;
+import java.net.BindException;
+import java.util.Random;
+
 /**
  * This class tests the validation of the configuration object when passed 
  * to the NameNode
@@ -49,7 +49,7 @@ public class TestValidateConfigurationSettings {
    * an exception
    * is thrown when trying to re-use the same port
    */
-  @Test(expected = BindException.class)
+  @Test(expected = BindException.class, timeout = 300000)
   public void testThatMatchingRPCandHttpPortsThrowException() 
       throws IOException {
 
@@ -79,7 +79,7 @@ public class TestValidateConfigurationSettings {
    * Tests setting the rpc port to a different as the web port that an 
    * exception is NOT thrown 
    */
-  @Test
+  @Test(timeout = 300000)
   public void testThatDifferentRPCandHttpPortsAreOK() 
       throws IOException {
 
@@ -117,7 +117,7 @@ public class TestValidateConfigurationSettings {
    * HDFS-3013: NameNode format command doesn't pick up
    * dfs.namenode.name.dir.NameServiceId configuration.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testGenericKeysForNameNodeFormat()
       throws IOException {
     Configuration conf = new HdfsConfiguration();

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestDelegationTokensWithHA.java

@@ -17,27 +17,7 @@
  */
 package org.apache.hadoop.hdfs.server.namenode.ha;
 
-import static org.junit.Assert.assertArrayEquals;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-import static org.mockito.Mockito.mock;
-
-import java.io.ByteArrayInputStream;
-import java.io.DataInputStream;
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.URI;
-import java.security.PrivilegedExceptionAction;
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.Map;
-
-import javax.servlet.http.HttpServletResponse;
-import javax.ws.rs.core.Response;
-
+import com.google.common.base.Joiner;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -45,11 +25,7 @@ import org.apache.hadoop.fs.AbstractFileSystem;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
-import org.apache.hadoop.hdfs.DFSConfigKeys;
-import org.apache.hadoop.hdfs.DistributedFileSystem;
-import org.apache.hadoop.hdfs.HAUtil;
-import org.apache.hadoop.hdfs.MiniDFSCluster;
-import org.apache.hadoop.hdfs.MiniDFSNNTopology;
+import org.apache.hadoop.hdfs.*;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
 import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
 import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager;
@@ -75,7 +51,20 @@ import org.junit.Test;
 import org.mockito.internal.util.reflection.Whitebox;
 import org.mortbay.util.ajax.JSON;
 
-import com.google.common.base.Joiner;
+import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.core.Response;
+import java.io.ByteArrayInputStream;
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.URI;
+import java.security.PrivilegedExceptionAction;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.mock;
 
 /**
  * Test case for client support of delegation tokens in an HA cluster.
@@ -128,8 +117,8 @@ public class TestDelegationTokensWithHA {
       cluster.shutdown();
     }
   }
-  
-  @Test
+
+  @Test(timeout = 300000)
   public void testDelegationTokenDFSApi() throws Exception {
     final Token<DelegationTokenIdentifier> token =
         getDelegationToken(fs, "JobTracker");
@@ -192,7 +181,7 @@ public class TestDelegationTokensWithHA {
    * Test if correct exception (StandbyException or RetriableException) can be
    * thrown during the NN failover. 
    */
-  @Test
+  @Test(timeout = 300000)
   public void testDelegationTokenDuringNNFailover() throws Exception {
     EditLogTailer editLogTailer = nn1.getNamesystem().getEditLogTailer();
     // stop the editLogTailer of nn1
@@ -260,7 +249,7 @@ public class TestDelegationTokensWithHA {
     doRenewOrCancel(token, clientConf, TokenTestAction.CANCEL);
   }
 
-  @Test
+  @Test(timeout = 300000)
   public void testDelegationTokenWithDoAs() throws Exception {
     final Token<DelegationTokenIdentifier> token =
         getDelegationToken(fs, "JobTracker");
@@ -291,8 +280,8 @@ public class TestDelegationTokensWithHA {
       }
     });
   }
-  
-  @Test
+
+  @Test(timeout = 300000)
   public void testHAUtilClonesDelegationTokens() throws Exception {
     final Token<DelegationTokenIdentifier> token =
         getDelegationToken(fs, "JobTracker");
@@ -354,7 +343,7 @@ public class TestDelegationTokensWithHA {
    * exception if the URI is a logical URI. This bug fails the combination of
    * ha + mapred + security.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testDFSGetCanonicalServiceName() throws Exception {
     URI hAUri = HATestUtil.getLogicalUri(cluster);
     String haService = HAUtil.buildTokenServiceForLogicalUri(hAUri,
@@ -368,8 +357,8 @@ public class TestDelegationTokensWithHA {
     token.renew(dfs.getConf());
     token.cancel(dfs.getConf());
   }
-  
-  @Test
+
+  @Test(timeout = 300000)
   public void testHdfsGetCanonicalServiceName() throws Exception {
     Configuration conf = dfs.getConf();
     URI haUri = HATestUtil.getLogicalUri(cluster);
@@ -390,7 +379,7 @@ public class TestDelegationTokensWithHA {
    * password. (HDFS-6475). With StandbyException, the client can failover to try
    * activeNN.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testDelegationTokenStandbyNNAppearFirst() throws Exception {
     // make nn0 the standby NN, and nn1 the active NN
     cluster.transitionToStandby(0);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHAMetrics.java

@@ -17,9 +17,6 @@
  */
 package org.apache.hadoop.hdfs.server.namenode.ha;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -33,14 +30,17 @@ import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
 import org.apache.hadoop.io.IOUtils;
 import org.junit.Test;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Make sure HA-related metrics are updated and reported appropriately.
  */
 public class TestHAMetrics {
   
   private static final Log LOG = LogFactory.getLog(TestHAMetrics.class);
-  
-  @Test
+
+  @Test(timeout = 300000)
   public void testHAMetrics() throws Exception {
     Configuration conf = new Configuration();
     conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHAStateTransitions.java

@@ -17,20 +17,7 @@
  */
 package org.apache.hadoop.hdfs.server.namenode.ha;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
-import java.io.DataOutputStream;
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.net.URI;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.concurrent.locks.ReentrantReadWriteLock;
-
+import com.google.common.util.concurrent.Uninterruptibles;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.commons.logging.impl.Log4JLogger;
@@ -40,13 +27,7 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.ha.HAServiceProtocol.RequestSource;
 import org.apache.hadoop.ha.HAServiceProtocol.StateChangeRequestInfo;
-import org.apache.hadoop.hdfs.DFSConfigKeys;
-import org.apache.hadoop.hdfs.DFSTestUtil;
-import org.apache.hadoop.hdfs.DFSUtil;
-import org.apache.hadoop.hdfs.HAUtil;
-import org.apache.hadoop.hdfs.HdfsConfiguration;
-import org.apache.hadoop.hdfs.MiniDFSCluster;
-import org.apache.hadoop.hdfs.MiniDFSNNTopology;
+import org.apache.hadoop.hdfs.*;
 import org.apache.hadoop.hdfs.protocol.ClientProtocol;
 import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
 import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
@@ -66,7 +47,16 @@ import org.junit.Assert;
 import org.junit.Test;
 import org.mockito.Mockito;
 
-import com.google.common.util.concurrent.Uninterruptibles;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.URI;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+import static org.junit.Assert.*;
 
 /**
  * Tests state transition from active->standby, and manual failover
@@ -92,7 +82,7 @@ public class TestHAStateTransitions {
    * active and standby mode, making sure it doesn't
    * double-play any edits.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testTransitionActiveToStandby() throws Exception {
     Configuration conf = new Configuration();
     MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
@@ -148,7 +138,7 @@ public class TestHAStateTransitions {
    * Test that transitioning a service to the state that it is already
    * in is a nop, specifically, an exception is not thrown.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testTransitionToCurrentStateIsANop() throws Exception {
     Configuration conf = new Configuration();
     conf.setLong(DFSConfigKeys.DFS_NAMENODE_PATH_BASED_CACHE_REFRESH_INTERVAL_MS, 1L);
@@ -220,7 +210,7 @@ public class TestHAStateTransitions {
   /**
    * Tests manual failover back and forth between two NameNodes.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testManualFailoverAndFailback() throws Exception {
     Configuration conf = new Configuration();
     MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
@@ -346,7 +336,7 @@ public class TestHAStateTransitions {
   /**
    * Test that delegation tokens continue to work after the failover.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testDelegationTokensAfterFailover() throws IOException {
     Configuration conf = new Configuration();
     conf.setBoolean(
@@ -383,7 +373,7 @@ public class TestHAStateTransitions {
    * Tests manual failover back and forth between two NameNodes
    * for federation cluster with two namespaces.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testManualFailoverFailbackFederationHA() throws Exception {
     Configuration conf = new Configuration();
     MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
@@ -403,12 +393,12 @@ public class TestHAStateTransitions {
     }
   }
 
-  @Test
+  @Test(timeout = 300000)
   public void testFailoverWithEmptyInProgressEditLog() throws Exception {
     testFailoverAfterCrashDuringLogRoll(false);
   }
-  
-  @Test
+
+  @Test(timeout = 300000)
   public void testFailoverWithEmptyInProgressEditLogWithHeader()
       throws Exception {
     testFailoverAfterCrashDuringLogRoll(true);
@@ -570,7 +560,7 @@ public class TestHAStateTransitions {
    * by virtue of the fact that it wouldn't work properly if the proxies
    * returned were not for the correct NNs.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testIsAtLeastOneActive() throws Exception {
     MiniDFSCluster cluster = new MiniDFSCluster.Builder(new HdfsConfiguration())
         .nnTopology(MiniDFSNNTopology.simpleHATopology())

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestStandbyCheckpoints.java

@@ -17,23 +17,11 @@
  */
 package org.apache.hadoop.hdfs.server.namenode.ha;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
-import java.io.File;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.net.BindException;
-import java.lang.management.ManagementFactory;
-import java.lang.management.ThreadInfo;
-import java.lang.management.ThreadMXBean;
-import java.net.URI;
-import java.net.URL;
-import java.util.List;
-import java.util.Random;
-
+import com.google.common.base.Supplier;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Lists;
+import com.google.common.io.Files;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -43,14 +31,8 @@ import org.apache.hadoop.hdfs.DFSConfigKeys;
 import org.apache.hadoop.hdfs.DFSTestUtil;
 import org.apache.hadoop.hdfs.MiniDFSCluster;
 import org.apache.hadoop.hdfs.MiniDFSNNTopology;
-import org.apache.hadoop.hdfs.server.namenode.FSImage;
-import org.apache.hadoop.hdfs.server.namenode.FSImageTestUtil;
-import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
-import org.apache.hadoop.hdfs.server.namenode.JournalSet;
-import org.apache.hadoop.hdfs.server.namenode.NNStorage;
+import org.apache.hadoop.hdfs.server.namenode.*;
 import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeFile;
-import org.apache.hadoop.hdfs.server.namenode.NameNode;
-import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter;
 import org.apache.hadoop.hdfs.util.Canceler;
 import org.apache.hadoop.io.compress.CompressionCodecFactory;
 import org.apache.hadoop.io.compress.CompressionOutputStream;
@@ -64,11 +46,19 @@ import org.junit.Before;
 import org.junit.Test;
 import org.mockito.Mockito;
 
-import com.google.common.base.Supplier;
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableSet;
-import com.google.common.collect.Lists;
-import com.google.common.io.Files;
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadInfo;
+import java.lang.management.ThreadMXBean;
+import java.net.BindException;
+import java.net.URI;
+import java.net.URL;
+import java.util.List;
+import java.util.Random;
+
+import static org.junit.Assert.*;
 
 public class TestStandbyCheckpoints {
   private static final int NUM_DIRS_IN_LOG = 200000;
@@ -143,7 +133,7 @@ public class TestStandbyCheckpoints {
     }
   }
 
-  @Test
+  @Test(timeout = 300000)
   public void testSBNCheckpoints() throws Exception {
     JournalSet standbyJournalSet = NameNodeAdapter.spyOnJournalSet(nn1);
     
@@ -185,7 +175,7 @@ public class TestStandbyCheckpoints {
    * checkpoint for the given txid, but this should not cause
    * an abort, etc.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testBothNodesInStandbyState() throws Exception {
     doEdits(0, 10);
     
@@ -216,7 +206,7 @@ public class TestStandbyCheckpoints {
    * same txid, which is a no-op. This test makes sure this doesn't
    * cause any problem.
    */
-  @Test
+  @Test(timeout = 300000)
   public void testCheckpointWhenNoNewTransactionsHappened()
       throws Exception {
     // Checkpoint as fast as we can, in a tight loop.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/tools/TestTools.java

@@ -90,7 +90,7 @@ public class TestTools {
       fail("testDFSAdminHelp error" + e);
     }
 
-    String pattern = "Usage: java DFSAdmin";
+    String pattern = "Usage: hdfs dfsadmin";
     checkOutput(new String[] { "-cancel", "-renew" }, pattern, System.err,
         DFSAdmin.class);
   }

hadoop-yarn-project/CHANGES.txt

@@ -181,6 +181,9 @@ Release 2.6.0 - UNRELEASED
     YARN-2511. Allowed all origins by default when CrossOriginFilter is
     enabled. (Jonathan Eagles via zjshen)
 
+    YARN-2508. Cross Origin configuration parameters prefix are not honored
+    (Mit Desai via jeagles)
+
   OPTIMIZATIONS
 
   BUG FIXES
@@ -284,6 +287,9 @@ Release 2.6.0 - UNRELEASED
     YARN-2431. NM restart: cgroup is not removed for reacquired containers
     (jlowe)
 
+    YARN-2519. Credential Provider related unit tests failed on Windows.
+    (Xiaoyu Yao via cnauroth)
+
 Release 2.5.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/webapp/util/TestWebAppUtils.java

@@ -24,6 +24,7 @@ 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.apache.hadoop.http.HttpServer2;
 import org.apache.hadoop.http.HttpServer2.Builder;
 import org.apache.hadoop.security.alias.CredentialProvider;
@@ -74,8 +75,9 @@ public class TestWebAppUtils {
         "target/test-dir"));
 
     Configuration conf = new Configuration();
+    final Path jksPath = new Path(testDir.toString(), "test.jks");
     final String ourUrl =
-    JavaKeyStoreProvider.SCHEME_NAME + "://file/" + testDir + "/test.jks";
+    JavaKeyStoreProvider.SCHEME_NAME + "://file" + jksPath.toUri();
 
     File file = new File(testDir, "test.jks");
     file.delete();

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/main/java/org/apache/hadoop/yarn/server/timeline/webapp/CrossOriginFilterInitializer.java

@@ -18,6 +18,7 @@
 
 package org.apache.hadoop.yarn.server.timeline.webapp;
 
+import java.util.HashMap;
 import java.util.Map;
 
 import org.apache.hadoop.conf.Configuration;
@@ -37,6 +38,15 @@ public class CrossOriginFilterInitializer extends FilterInitializer {
   }
 
   static Map<String, String> getFilterParameters(Configuration conf) {
-    return conf.getValByRegex(PREFIX);
+    Map<String, String> filterParams =
+        new HashMap<String, String>();
+    for (Map.Entry<String, String> entry : conf.getValByRegex(PREFIX)
+        .entrySet()) {
+      String name = entry.getKey();
+      String value = entry.getValue();
+      name = name.substring(PREFIX.length());
+      filterParams.put(name, value);
+    }
+    return filterParams;
   }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/test/java/org/apache/hadoop/yarn/server/timeline/webapp/TestCrossOriginFilterInitializer.java

@@ -42,11 +42,8 @@ public class TestCrossOriginFilterInitializer {
         CrossOriginFilterInitializer.getFilterParameters(conf);
 
     // retrieve values
-    String rootvalue =
-        filterParameters.get(CrossOriginFilterInitializer.PREFIX + "rootparam");
-    String nestedvalue =
-        filterParameters.get(CrossOriginFilterInitializer.PREFIX
-            + "nested.param");
+    String rootvalue = filterParameters.get("rootparam");
+    String nestedvalue = filterParameters.get("nested.param");
     String outofscopeparam = filterParameters.get("outofscopeparam");
 
     // verify expected values are in place

pom.xml

@@ -324,6 +324,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
             <exclude>.gitignore</exclude>
             <exclude>.git/**</exclude>
             <exclude>.idea/**</exclude>
+	    <exclude>**/build/**</exclude>
          </excludes>
        </configuration>
       </plugin>