YARN-9. Rename YARN_HOME to HADOOP_YARN_HOME. Contributed by Vinod K V.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1390218 13f79535-47bb-0310-9956-ffa450edef68

hadoop-yarn-project/CHANGES.txt

@@ -48,6 +48,8 @@ Release 2.0.2-alpha - 2012-09-07
 
   INCOMPATIBLE CHANGES
 
+    YARN-9. Rename YARN_HOME to HADOOP_YARN_HOME. (vinodkv via acmurthy)
+
   NEW FEATURES
 
     YARN-1. Promote YARN to be a sub-project of Apache Hadoop. (acmurthy)

hadoop-yarn-project/hadoop-yarn/bin/slaves.sh

@@ -22,7 +22,7 @@
 #
 #   YARN_SLAVES    File naming remote hosts.
 #     Default is ${YARN_CONF_DIR}/slaves.
-#   YARN_CONF_DIR  Alternate conf dir. Default is ${YARN_HOME}/conf.
+#   YARN_CONF_DIR  Alternate conf dir. Default is ${HADOOP_YARN_HOME}/conf.
 #   YARN_SLAVE_SLEEP Seconds to sleep between spawning remote commands.
 #   YARN_SSH_OPTS Options passed to ssh when running remote commands.
 ##

hadoop-yarn-project/hadoop-yarn/bin/yarn

@@ -41,7 +41,7 @@
 #                              more than one command (fs, dfs, fsck, 
 #                              dfsadmin etc)  
 #
-#   YARN_CONF_DIR  Alternate conf dir. Default is ${YARN_HOME}/conf.
+#   YARN_CONF_DIR  Alternate conf dir. Default is ${HADOOP_YARN_HOME}/conf.
 #
 #   YARN_ROOT_LOGGER The root appender. Default is INFO,console
 #
@@ -116,43 +116,43 @@ fi
 CLASSPATH="${HADOOP_CONF_DIR}:${YARN_CONF_DIR}:${CLASSPATH}"
 
 # for developers, add Hadoop classes to CLASSPATH
-if [ -d "$YARN_HOME/yarn-api/target/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/yarn-api/target/classes
+if [ -d "$HADOOP_YARN_HOME/yarn-api/target/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/yarn-api/target/classes
 fi
-if [ -d "$YARN_HOME/yarn-common/target/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/yarn-common/target/classes
+if [ -d "$HADOOP_YARN_HOME/yarn-common/target/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/yarn-common/target/classes
 fi
-if [ -d "$YARN_HOME/yarn-mapreduce/target/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/yarn-mapreduce/target/classes
+if [ -d "$HADOOP_YARN_HOME/yarn-mapreduce/target/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/yarn-mapreduce/target/classes
 fi
-if [ -d "$YARN_HOME/yarn-master-worker/target/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/yarn-master-worker/target/classes
+if [ -d "$HADOOP_YARN_HOME/yarn-master-worker/target/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/yarn-master-worker/target/classes
 fi
-if [ -d "$YARN_HOME/yarn-server/yarn-server-nodemanager/target/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/yarn-server/yarn-server-nodemanager/target/classes
+if [ -d "$HADOOP_YARN_HOME/yarn-server/yarn-server-nodemanager/target/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/yarn-server/yarn-server-nodemanager/target/classes
 fi
-if [ -d "$YARN_HOME/yarn-server/yarn-server-common/target/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/yarn-server/yarn-server-common/target/classes
+if [ -d "$HADOOP_YARN_HOME/yarn-server/yarn-server-common/target/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/yarn-server/yarn-server-common/target/classes
 fi
-if [ -d "$YARN_HOME/yarn-server/yarn-server-resourcemanager/target/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/yarn-server/yarn-server-resourcemanager/target/classes
+if [ -d "$HADOOP_YARN_HOME/yarn-server/yarn-server-resourcemanager/target/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/yarn-server/yarn-server-resourcemanager/target/classes
 fi
-if [ -d "$YARN_HOME/build/test/classes" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/target/test/classes
+if [ -d "$HADOOP_YARN_HOME/build/test/classes" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/target/test/classes
 fi
-if [ -d "$YARN_HOME/build/tools" ]; then
-  CLASSPATH=${CLASSPATH}:$YARN_HOME/build/tools
+if [ -d "$HADOOP_YARN_HOME/build/tools" ]; then
+  CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/build/tools
 fi
 
-CLASSPATH=${CLASSPATH}:$YARN_HOME/${YARN_DIR}/*
-CLASSPATH=${CLASSPATH}:$YARN_HOME/${YARN_LIB_JARS_DIR}/*
+CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/${YARN_DIR}/*
+CLASSPATH=${CLASSPATH}:$HADOOP_YARN_HOME/${YARN_LIB_JARS_DIR}/*
 
 # so that filenames w/ spaces are handled correctly in loops below
 IFS=
 
 # default log directory & file
 if [ "$YARN_LOG_DIR" = "" ]; then
-  YARN_LOG_DIR="$YARN_HOME/logs"
+  YARN_LOG_DIR="$HADOOP_YARN_HOME/logs"
 fi
 if [ "$YARN_LOGFILE" = "" ]; then
   YARN_LOGFILE='yarn.log'
@@ -210,7 +210,7 @@ fi
 # cygwin path translation
 if $cygwin; then
   CLASSPATH=`cygpath -p -w "$CLASSPATH"`
-  YARN_HOME=`cygpath -w "$YARN_HOME"`
+  HADOOP_YARN_HOME=`cygpath -w "$HADOOP_YARN_HOME"`
   YARN_LOG_DIR=`cygpath -w "$YARN_LOG_DIR"`
   TOOL_PATH=`cygpath -p -w "$TOOL_PATH"`
 fi
@@ -224,8 +224,8 @@ YARN_OPTS="$YARN_OPTS -Dhadoop.log.dir=$YARN_LOG_DIR"
 YARN_OPTS="$YARN_OPTS -Dyarn.log.dir=$YARN_LOG_DIR"
 YARN_OPTS="$YARN_OPTS -Dhadoop.log.file=$YARN_LOGFILE"
 YARN_OPTS="$YARN_OPTS -Dyarn.log.file=$YARN_LOGFILE"
-YARN_OPTS="$YARN_OPTS -Dyarn.home.dir=$YARN_HOME"
-YARN_OPTS="$YARN_OPTS -Dhadoop.home.dir=$YARN_HOME"
+YARN_OPTS="$YARN_OPTS -Dyarn.home.dir=$HADOOP_YARN_HOME"
+YARN_OPTS="$YARN_OPTS -Dhadoop.home.dir=$HADOOP_YARN_HOME"
 YARN_OPTS="$YARN_OPTS -Dhadoop.root.logger=${YARN_ROOT_LOGGER:-INFO,console}"
 YARN_OPTS="$YARN_OPTS -Dyarn.root.logger=${YARN_ROOT_LOGGER:-INFO,console}"
 if [ "x$JAVA_LIBRARY_PATH" != "x" ]; then

hadoop-yarn-project/hadoop-yarn/bin/yarn-config.sh

@@ -49,7 +49,7 @@ then
 fi
  
 # Allow alternate conf dir location.
-export YARN_CONF_DIR="${HADOOP_CONF_DIR:-$YARN_HOME/conf}"
+export YARN_CONF_DIR="${HADOOP_CONF_DIR:-$HADOOP_YARN_HOME/conf}"
 
 #check to see it is specified whether to use the slaves or the
 # masters file

hadoop-yarn-project/hadoop-yarn/bin/yarn-daemon.sh

@@ -20,7 +20,7 @@
 #
 # Environment Variables
 #
-#   YARN_CONF_DIR  Alternate conf dir. Default is ${YARN_HOME}/conf.
+#   YARN_CONF_DIR  Alternate conf dir. Default is ${HADOOP_YARN_HOME}/conf.
 #   YARN_LOG_DIR   Where log files are stored.  PWD by default.
 #   YARN_MASTER    host:path where hadoop code should be rsync'd from
 #   YARN_PID_DIR   The pid files are stored. /tmp by default.
@@ -76,7 +76,7 @@ fi
 
 # get log directory
 if [ "$YARN_LOG_DIR" = "" ]; then
-  export YARN_LOG_DIR="$YARN_HOME/logs"
+  export YARN_LOG_DIR="$HADOOP_YARN_HOME/logs"
 fi
 
 if [ ! -w "$YARN_LOG_DIR" ] ; then
@@ -115,13 +115,13 @@ case $startStop in
 
     if [ "$YARN_MASTER" != "" ]; then
       echo rsync from $YARN_MASTER
-      rsync -a -e ssh --delete --exclude=.svn --exclude='logs/*' --exclude='contrib/hod/logs/*' $YARN_MASTER/ "$YARN_HOME"
+      rsync -a -e ssh --delete --exclude=.svn --exclude='logs/*' --exclude='contrib/hod/logs/*' $YARN_MASTER/ "$HADOOP_YARN_HOME"
     fi
 
     hadoop_rotate_log $log
     echo starting $command, logging to $log
-    cd "$YARN_HOME"
-    nohup nice -n $YARN_NICENESS "$YARN_HOME"/bin/yarn --config $YARN_CONF_DIR $command "$@" > "$log" 2>&1 < /dev/null &
+    cd "$HADOOP_YARN_HOME"
+    nohup nice -n $YARN_NICENESS "$HADOOP_YARN_HOME"/bin/yarn --config $YARN_CONF_DIR $command "$@" > "$log" 2>&1 < /dev/null &
     echo $! > $pid
     sleep 1; head "$log"
     ;;

hadoop-yarn-project/hadoop-yarn/bin/yarn-daemons.sh

@@ -34,5 +34,5 @@ DEFAULT_LIBEXEC_DIR="$bin"/../libexec
 HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 . $HADOOP_LIBEXEC_DIR/yarn-config.sh
 
-exec "$bin/slaves.sh" --config $YARN_CONF_DIR cd "$YARN_HOME" \; "$bin/yarn-daemon.sh" --config $YARN_CONF_DIR "$@"
+exec "$bin/slaves.sh" --config $YARN_CONF_DIR cd "$HADOOP_YARN_HOME" \; "$bin/yarn-daemon.sh" --config $YARN_CONF_DIR "$@"
 

hadoop-yarn-project/hadoop-yarn/conf/yarn-env.sh

@@ -17,7 +17,7 @@
 export HADOOP_YARN_USER=${HADOOP_YARN_USER:-yarn}
 
 # resolve links - $0 may be a softlink
-export YARN_CONF_DIR="${YARN_CONF_DIR:-$YARN_HOME/conf}"
+export YARN_CONF_DIR="${YARN_CONF_DIR:-$HADOOP_YARN_HOME/conf}"
 
 # some Java parameters
 # export JAVA_HOME=/home/y/libexec/jdk1.6.0/
@@ -47,7 +47,7 @@ IFS=
 
 # default log directory & file
 if [ "$YARN_LOG_DIR" = "" ]; then
-  YARN_LOG_DIR="$YARN_HOME/logs"
+  YARN_LOG_DIR="$HADOOP_YARN_HOME/logs"
 fi
 if [ "$YARN_LOGFILE" = "" ]; then
   YARN_LOGFILE='yarn.log'

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java

@@ -169,9 +169,9 @@ public interface ApplicationConstants {
     MALLOC_ARENA_MAX("MALLOC_ARENA_MAX"),
     
     /**
-     * $YARN_HOME
+     * $HADOOP_YARN_HOME
      */
-    YARN_HOME("YARN_HOME");
+    HADOOP_YARN_HOME("HADOOP_YARN_HOME");
 
     private final String variable;
     private Environment(String variable) {

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

@@ -21,9 +21,12 @@ package org.apache.hadoop.yarn.conf;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.UnknownHostException;
+import java.util.Arrays;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.net.NetUtils;
+import org.apache.hadoop.util.StringUtils;
+import org.apache.hadoop.yarn.api.ApplicationConstants;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
@@ -281,7 +284,12 @@ public class YarnConfiguration extends Configuration {
 
   /** Environment variables that containers may override rather than use NodeManager's default.*/
   public static final String NM_ENV_WHITELIST = NM_PREFIX + "env-whitelist";
-  public static final String DEFAULT_NM_ENV_WHITELIST = "JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,YARN_HOME";
+  public static final String DEFAULT_NM_ENV_WHITELIST = StringUtils.join(",",
+    Arrays.asList(ApplicationConstants.Environment.JAVA_HOME.key(),
+      ApplicationConstants.Environment.HADOOP_COMMON_HOME.key(),
+      ApplicationConstants.Environment.HADOOP_HDFS_HOME.key(),
+      ApplicationConstants.Environment.HADOOP_CONF_DIR.key(),
+      ApplicationConstants.Environment.HADOOP_YARN_HOME.key()));
   
   /** address of node manager IPC.*/
   public static final String NM_ADDRESS = NM_PREFIX + "address";
@@ -570,12 +578,19 @@ public class YarnConfiguration extends Configuration {
    * CLASSPATH entries
    */
   public static final String[] DEFAULT_YARN_APPLICATION_CLASSPATH = {
-      "$HADOOP_CONF_DIR", "$HADOOP_COMMON_HOME/share/hadoop/common/*",
-      "$HADOOP_COMMON_HOME/share/hadoop/common/lib/*",
-      "$HADOOP_HDFS_HOME/share/hadoop/hdfs/*",
-      "$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib/*",
-      "$YARN_HOME/share/hadoop/yarn/*",
-      "$YARN_HOME/share/hadoop/yarn/lib/*"};
+      ApplicationConstants.Environment.HADOOP_CONF_DIR.$(),
+      ApplicationConstants.Environment.HADOOP_COMMON_HOME.$()
+          + "/share/hadoop/common/*",
+      ApplicationConstants.Environment.HADOOP_COMMON_HOME.$()
+          + "/share/hadoop/common/lib/*",
+      ApplicationConstants.Environment.HADOOP_HDFS_HOME.$()
+          + "/share/hadoop/hdfs/*",
+      ApplicationConstants.Environment.HADOOP_HDFS_HOME.$()
+          + "/share/hadoop/hdfs/lib/*",
+      ApplicationConstants.Environment.HADOOP_YARN_HOME.$()
+          + "/share/hadoop/yarn/*",
+      ApplicationConstants.Environment.HADOOP_YARN_HOME.$()
+          + "/share/hadoop/yarn/lib/*" };
 
   /** Container temp directory */
   public static final String DEFAULT_CONTAINER_TEMP_DIR = "./tmp";

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

@@ -266,7 +266,7 @@
   <property>
     <description>Environment variables that containers may override rather than use NodeManager's default.</description>
     <name>yarn.nodemanager.env-whitelist</name>
-    <value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,YARN_HOME</value>
+    <value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,HADOOP_YARN_HOME</value>
   </property>
 
   <property>
@@ -561,7 +561,7 @@
     <description>CLASSPATH for YARN applications. A comma-separated list
     of CLASSPATH entries</description>
      <name>yarn.application.classpath</name>
-     <value>$HADOOP_CONF_DIR,$HADOOP_COMMON_HOME/share/hadoop/common/*,$HADOOP_COMMON_HOME/share/hadoop/common/lib/*,$HADOOP_HDFS_HOME/share/hadoop/hdfs/*,$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib/*,$YARN_HOME/share/hadoop/yarn/*,$YARN_HOME/share/hadoop/yarn/lib/*</value>
+     <value>$HADOOP_CONF_DIR,$HADOOP_COMMON_HOME/share/hadoop/common/*,$HADOOP_COMMON_HOME/share/hadoop/common/lib/*,$HADOOP_HDFS_HOME/share/hadoop/hdfs/*,$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib/*,$HADOOP_YARN_HOME/share/hadoop/yarn/*,$HADOOP_YARN_HOME/share/hadoop/yarn/lib/*</value>
   </property>
 
 </configuration>

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

@@ -32,6 +32,7 @@ import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.util.Shell.ExitCodeException;
 import org.apache.hadoop.util.Shell.ShellCommandExecutor;
 import org.apache.hadoop.util.StringUtils;
+import org.apache.hadoop.yarn.api.ApplicationConstants;
 import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container;
@@ -92,7 +93,9 @@ public class LinuxContainerExecutor extends ContainerExecutor {
   }
 
   protected String getContainerExecutorExecutablePath(Configuration conf) {
-    File hadoopBin = new File(System.getenv("YARN_HOME"), "bin");
+    String yarnHomeEnvVar =
+        System.getenv(ApplicationConstants.Environment.HADOOP_YARN_HOME.key());
+    File hadoopBin = new File(yarnHomeEnvVar, "bin");
     String defaultPath =
       new File(hadoopBin, "container-executor").getAbsolutePath();
     return null == conf

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/CapacityScheduler.apt.vm

@@ -318,7 +318,7 @@ Hadoop MapReduce Next Generation - Capacity Scheduler
   
 ----
 $ vi $HADOOP_CONF_DIR/capacity-scheduler.xml
-$ $YARN_HOME/bin/yarn rmadmin -refreshQueues
+$ $HADOOP_YARN_HOME/bin/yarn rmadmin -refreshQueues
 ----  
 
   <Note:> Queues cannot be <deleted>, only addition of new queues is supported -

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/ClusterSetup.apt.vm

@@ -497,20 +497,20 @@ Hadoop MapReduce Next Generation - Cluster Setup
     ResourceManager:
   
 ----
-  $ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start resourcemanager 
+  $ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start resourcemanager 
 ----    	  
 
     Run a script to start NodeManagers on all slaves:
 
 ----
-  $ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start nodemanager 
+  $ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start nodemanager 
 ----    	  
 
     Start a standalone WebAppProxy server.  If multiple servers
     are used with load balancing it should be run on each of them:
 
 ----
-  $ $YARN_HOME/bin/yarn start proxyserver --config $HADOOP_CONF_DIR  
+  $ $HADOOP_YARN_HOME/bin/yarn start proxyserver --config $HADOOP_CONF_DIR  
 ----
 
     Start the MapReduce JobHistory Server with the following command, run on the  
@@ -539,20 +539,20 @@ Hadoop MapReduce Next Generation - Cluster Setup
     ResourceManager:
   
 ----
-  $ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop resourcemanager 
+  $ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop resourcemanager 
 ----    	  
 
     Run a script to stop NodeManagers on all slaves:
 
 ----
-  $ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop nodemanager 
+  $ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop nodemanager 
 ----    	  
 
     Stop the WebAppProxy server. If multiple servers are used with load
     balancing it should be run on each of them:
 
 ----
-  $ $YARN_HOME/bin/yarn stop proxyserver --config $HADOOP_CONF_DIR  
+  $ $HADOOP_YARN_HOME/bin/yarn stop proxyserver --config $HADOOP_CONF_DIR  
 ----
 
 
@@ -883,7 +883,7 @@ KVNO Timestamp         Principal
       The path passed in <<<-Dcontainer-executor.conf.dir>>> should be the 
       path on the cluster nodes where a configuration file for the setuid 
       executable should be located. The executable should be installed in
-      $YARN_HOME/bin.
+      $HADOOP_YARN_HOME/bin.
 
       The executable must have specific permissions: 6050 or --Sr-s--- 
       permissions user-owned by <root> (super-user) and group-owned by a 
@@ -1040,13 +1040,13 @@ KVNO Timestamp         Principal
     ResourceManager as <yarn>:
   
 ----
-[yarn]$ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start resourcemanager 
+[yarn]$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start resourcemanager 
 ----    	  
 
     Run a script to start NodeManagers on all slaves as <yarn>:
 
 ----
-[yarn]$ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start nodemanager 
+[yarn]$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR start nodemanager 
 ----    	  
 
     Start a standalone WebAppProxy server. Run on the WebAppProxy 
@@ -1054,7 +1054,7 @@ KVNO Timestamp         Principal
     it should be run on each of them:
 
 ----
-[yarn]$ $YARN_HOME/bin/yarn start proxyserver --config $HADOOP_CONF_DIR  
+[yarn]$ $HADOOP_YARN_HOME/bin/yarn start proxyserver --config $HADOOP_CONF_DIR  
 ----    	  
 
     Start the MapReduce JobHistory Server with the following command, run on the  
@@ -1083,13 +1083,13 @@ KVNO Timestamp         Principal
     ResourceManager as <yarn>:
   
 ----
-[yarn]$ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop resourcemanager 
+[yarn]$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop resourcemanager 
 ----    	  
 
     Run a script to stop NodeManagers on all slaves as <yarn>:
 
 ----
-[yarn]$ $YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop nodemanager 
+[yarn]$ $HADOOP_YARN_HOME/sbin/yarn-daemon.sh --config $HADOOP_CONF_DIR stop nodemanager 
 ----    	  
 
     Stop the WebAppProxy server. Run on the WebAppProxy  server as
@@ -1097,7 +1097,7 @@ KVNO Timestamp         Principal
     should be run on each of them:
 
 ----
-[yarn]$ $YARN_HOME/bin/yarn stop proxyserver --config $HADOOP_CONF_DIR  
+[yarn]$ $HADOOP_YARN_HOME/bin/yarn stop proxyserver --config $HADOOP_CONF_DIR  
 ----
 
     Stop the MapReduce JobHistory Server with the following command, run on the  

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/SingleCluster.apt.vm

@@ -43,7 +43,7 @@ $ mvn clean install assembly:assembly -Pnative
   Assuming you have installed hadoop-common/hadoop-hdfs and exported
   <<$HADOOP_COMMON_HOME>>/<<$HADOOP_HDFS_HOME>>, untar hadoop mapreduce 
   tarball and set environment variable <<$HADOOP_MAPRED_HOME>> to the 
-  untarred directory. Set <<$YARN_HOME>> the same as <<$HADOOP_MAPRED_HOME>>. 
+  untarred directory. Set <<$HADOOP_YARN_HOME>> the same as <<$HADOOP_MAPRED_HOME>>. 
  
   <<NOTE:>> The following instructions assume you have hdfs running.
 
@@ -174,7 +174,7 @@ Add the following configs to your <<<yarn-site.xml>>>
 * Running daemons.
 
   Assuming that the environment variables <<$HADOOP_COMMON_HOME>>, <<$HADOOP_HDFS_HOME>>, <<$HADOO_MAPRED_HOME>>,
-  <<$YARN_HOME>>, <<$JAVA_HOME>> and <<$HADOOP_CONF_DIR>> have been set appropriately.
+  <<$HADOOP_YARN_HOME>>, <<$JAVA_HOME>> and <<$HADOOP_CONF_DIR>> have been set appropriately.
   Set $<<$YARN_CONF_DIR>> the same as $<<HADOOP_CONF_DIR>>
  
   Run ResourceManager and NodeManager as: