From 6d551b83de252dead71d102ec553a819c56294af Mon Sep 17 00:00:00 2001
From: Mahadev Konar <mahadev@apache.org>
Date: Fri, 16 Dec 2011 09:09:28 +0000
Subject: [PATCH] MAPREDUCE-3366. Mapreduce component should use consistent
 directory structure layout as HDFS/common (Eric Yang via mahadev)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1215065 13f79535-47bb-0310-9956-ffa450edef68
---
 .../assemblies/hadoop-mapreduce-dist.xml      | 75 +++++++++++++++++--
 .../src/main/bin/hadoop-config.sh             | 17 +++++
 hadoop-dist/pom.xml                           | 12 +--
 hadoop-mapreduce-project/CHANGES.txt          |  3 +
 hadoop-mapreduce-project/INSTALL              |  6 +-
 .../hadoop-yarn/bin/slaves.sh                 |  2 +-
 .../bin/{start-all.sh => start-yarn.sh}       |  2 +-
 .../bin/{stop-all.sh => stop-yarn.sh}         |  2 +-
 hadoop-mapreduce-project/hadoop-yarn/bin/yarn | 37 +--------
 .../hadoop-yarn/bin/yarn-config.sh            | 39 +++++-----
 .../hadoop-yarn/bin/yarn-daemon.sh            |  2 +-
 .../hadoop-yarn/bin/yarn-daemons.sh           |  2 +-
 .../hadoop-yarn/conf/yarn-env.sh              |  4 -
 .../hadoop/yarn/api/ApplicationConstants.java |  4 +-
 .../src/site/apt/SingleCluster.apt.vm         | 18 +----
 hadoop-mapreduce-project/pom.xml              | 19 ++---
 16 files changed, 130 insertions(+), 114 deletions(-)
 rename hadoop-mapreduce-project/hadoop-yarn/bin/{start-all.sh => start-yarn.sh} (97%)
 rename hadoop-mapreduce-project/hadoop-yarn/bin/{stop-all.sh => stop-yarn.sh} (97%)

diff --git a/hadoop-assemblies/src/main/resources/assemblies/hadoop-mapreduce-dist.xml b/hadoop-assemblies/src/main/resources/assemblies/hadoop-mapreduce-dist.xml
index 4868590ac46..57f3c66dad3 100644
--- a/hadoop-assemblies/src/main/resources/assemblies/hadoop-mapreduce-dist.xml
+++ b/hadoop-assemblies/src/main/resources/assemblies/hadoop-mapreduce-dist.xml
@@ -22,7 +22,6 @@
     <format>dir</format>
   </formats>
   <includeBaseDirectory>false</includeBaseDirectory>
-  <!-- TODO: this layout is wrong. We need module specific bin files in module specific dirs -->
   <fileSets>
     <fileSet>
       <directory>hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/target/native/target/usr/local/bin</directory>
@@ -33,7 +32,7 @@
       <directory>hadoop-yarn/bin</directory>
       <outputDirectory>bin</outputDirectory>
       <includes>
-        <include>*</include>
+        <include>yarn</include>
       </includes>
       <fileMode>0755</fileMode>
     </fileSet>
@@ -41,17 +40,81 @@
       <directory>bin</directory>
       <outputDirectory>bin</outputDirectory>
       <includes>
-        <include>*</include>
+        <include>mapred</include>
+      </includes>
+      <fileMode>0755</fileMode>
+    </fileSet>
+    <fileSet>
+      <directory>bin</directory>
+      <outputDirectory>libexec</outputDirectory>
+      <includes>
+        <include>mapred-config.sh</include>
+      </includes>
+      <fileMode>0755</fileMode>
+    </fileSet>
+    <fileSet>
+      <directory>hadoop-yarn/bin</directory>
+      <outputDirectory>libexec</outputDirectory>
+      <includes>
+        <include>yarn-config.sh</include>
+      </includes>
+      <fileMode>0755</fileMode>
+    </fileSet>
+    <fileSet>
+      <directory>hadoop-yarn/bin</directory>
+      <outputDirectory>sbin</outputDirectory>
+      <includes>
+        <include>yarn-daemon.sh</include>
+        <include>yarn-daemons.sh</include>
+        <include>start-yarn.sh</include>
+        <include>stop-yarn.sh</include>
       </includes>
       <fileMode>0755</fileMode>
     </fileSet>
     <fileSet>
       <directory>hadoop-yarn/conf</directory>
-      <outputDirectory>conf</outputDirectory>
+      <outputDirectory>etc/hadoop</outputDirectory>
       <includes>
         <include>**/*</include>
       </includes>
     </fileSet>
+    <fileSet>
+      <directory>${basedir}</directory>
+      <outputDirectory>/share/doc/hadoop/${hadoop.component}</outputDirectory>
+      <includes>
+        <include>*.txt</include>
+      </includes>
+    </fileSet>
+    <fileSet>
+      <directory>${project.build.directory}/webapps</directory>
+      <outputDirectory>/share/hadoop/${hadoop.component}/webapps</outputDirectory>
+    </fileSet>
+    <fileSet>
+      <directory>${basedir}/src/main/conf</directory>
+      <outputDirectory>/share/hadoop/${hadoop.component}/templates</outputDirectory>
+      <includes>
+        <include>*-site.xml</include>
+      </includes>
+    </fileSet>
+    <fileSet>
+      <directory>${basedir}/src/main/packages/templates/conf</directory>
+      <outputDirectory>/share/hadoop/${hadoop.component}/templates/conf</outputDirectory>
+      <includes>
+        <include>*</include>
+      </includes>
+    </fileSet>
+    <fileSet>
+      <directory>${basedir}/dev-support/jdiff</directory>
+      <outputDirectory>/share/hadoop/${hadoop.component}/jdiff</outputDirectory>
+    </fileSet>
+    <fileSet>
+      <directory>${project.build.directory}/site/jdiff/xml</directory>
+      <outputDirectory>/share/hadoop/${hadoop.component}/jdiff</outputDirectory>
+    </fileSet>
+    <fileSet>
+      <directory>${project.build.directory}/site</directory>
+      <outputDirectory>/share/doc/hadoop/${hadoop.component}</outputDirectory>
+    </fileSet>
   </fileSets>
   <moduleSets>
     <moduleSet>
@@ -59,7 +122,7 @@
         <exclude>org.apache.hadoop:hadoop-yarn-server-tests</exclude>
       </excludes>
       <binaries>
-        <outputDirectory>modules</outputDirectory>
+        <outputDirectory>share/hadoop/${hadoop.component}</outputDirectory>
         <includeDependencies>false</includeDependencies>
         <unpack>false</unpack>
       </binaries>
@@ -68,7 +131,7 @@
   <dependencySets>
     <dependencySet>
       <useProjectArtifact>false</useProjectArtifact>
-      <outputDirectory>/lib</outputDirectory>
+      <outputDirectory>/share/hadoop/${hadoop.component}/lib</outputDirectory>
       <!-- Exclude hadoop artifacts. They will be found via HADOOP* env -->
       <excludes>
         <exclude>org.apache.hadoop:hadoop-common</exclude>
diff --git a/hadoop-common-project/hadoop-common/src/main/bin/hadoop-config.sh b/hadoop-common-project/hadoop-common/src/main/bin/hadoop-config.sh
index e53ec737f5a..71c94817146 100644
--- a/hadoop-common-project/hadoop-common/src/main/bin/hadoop-config.sh
+++ b/hadoop-common-project/hadoop-common/src/main/bin/hadoop-config.sh
@@ -231,6 +231,23 @@ fi
 
 CLASSPATH=${CLASSPATH}:$HADOOP_HDFS_HOME/share/hadoop/hdfs'/*'
 
+# put yarn in classpath if present
+if [ "$YARN_HOME" = "" ]; then
+  if [ -d "${HADOOP_PREFIX}/share/hadoop/mapreduce" ]; then
+    YARN_HOME=$HADOOP_PREFIX
+  fi
+fi
+
+if [ -d "$YARN_HOME/share/hadoop/mapreduce/webapps" ]; then
+  CLASSPATH=${CLASSPATH}:$YARN_HOME/share/hadoop/mapreduce
+fi
+
+if [ -d "$YARN_HOME/share/hadoop/mapreduce/lib" ]; then
+  CLASSPATH=${CLASSPATH}:$YARN_HOME/share/hadoop/mapreduce/lib'/*'
+fi
+
+CLASSPATH=${CLASSPATH}:$YARN_HOME/share/hadoop/mapreduce'/*'
+
 # cygwin path translation
 if $cygwin; then
   HADOOP_HDFS_HOME=`cygpath -w "$HADOOP_HDFS_HOME"`
diff --git a/hadoop-dist/pom.xml b/hadoop-dist/pom.xml
index ed6b729a933..93fe32be252 100644
--- a/hadoop-dist/pom.xml
+++ b/hadoop-dist/pom.xml
@@ -76,6 +76,9 @@
       <id>dist</id>
       <activation>
         <activeByDefault>false</activeByDefault>
+        <property>
+          <name>tar|rpm|deb</name>
+        </property>
       </activation>
       <build>
         <plugins>
@@ -114,15 +117,6 @@
                       run cp -r $ROOT/hadoop-hdfs-project/hadoop-hdfs/target/hadoop-hdfs-${project.version}/* .
                       run cp -r $ROOT/hadoop-hdfs-project/hadoop-hdfs-httpfs/target/hadoop-hdfs-httpfs-${project.version}/* .
                       run cp -r $ROOT/hadoop-mapreduce-project/target/hadoop-mapreduce-${project.version}/* .
-                      COMMON_LIB=share/hadoop/common/lib
-                      MODULES=../../../../modules
-                      run ln -s $MODULES/hadoop-mapreduce-client-app-${project.version}.jar $COMMON_LIB
-                      run ln -s $MODULES/hadoop-yarn-api-${project.version}.jar $COMMON_LIB
-                      run ln -s $MODULES/hadoop-mapreduce-client-common-${project.version}.jar $COMMON_LIB
-                      run ln -s $MODULES/hadoop-yarn-common-${project.version}.jar $COMMON_LIB
-                      run ln -s $MODULES/hadoop-mapreduce-client-core-${project.version}.jar $COMMON_LIB
-                      run ln -s $MODULES/hadoop-yarn-server-common-${project.version}.jar $COMMON_LIB
-                      run ln -s $MODULES/hadoop-mapreduce-client-jobclient-${project.version}.jar $COMMON_LIB
                       echo
                       echo "Hadoop dist layout available at: ${project.build.directory}/hadoop-${project.version}"
                       echo
diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index a851daf472a..95a98ff344f 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -323,6 +323,9 @@ Release 0.23.1 - Unreleased
     MAPREDUCE-3422. Counter display names are not being picked up. (Jonathan
     Eagles via sseth)
 
+    MAPREDUCE-3366. Mapreduce component should use consistent directory structure 
+    layout as HDFS/common (Eric Yang via mahadev)
+
 Release 0.23.0 - 2011-11-01 
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-mapreduce-project/INSTALL b/hadoop-mapreduce-project/INSTALL
index e6de8cb92e4..e75b2aff2f9 100644
--- a/hadoop-mapreduce-project/INSTALL
+++ b/hadoop-mapreduce-project/INSTALL
@@ -55,11 +55,11 @@ Step 8) Modify mapred-site.xml to use yarn framework
 
 Step 9) cd $YARN_HOME
 
-Step 10) bin/yarn-daemon.sh start resourcemanager
+Step 10) sbin/yarn-daemon.sh start resourcemanager
 
-Step 11) bin/yarn-daemon.sh start nodemanager
+Step 11) sbin/yarn-daemon.sh start nodemanager
 
-Step 12) bin/yarn-daemon.sh start historyserver
+Step 12) sbin/yarn-daemon.sh start historyserver
 
 Step 13) You are all set, an example on how to run a mapreduce job is:
 cd $HADOOP_MAPRED_HOME
diff --git a/hadoop-mapreduce-project/hadoop-yarn/bin/slaves.sh b/hadoop-mapreduce-project/hadoop-yarn/bin/slaves.sh
index ee834779015..ee254603d6d 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/bin/slaves.sh
+++ b/hadoop-mapreduce-project/hadoop-yarn/bin/slaves.sh
@@ -38,7 +38,7 @@ fi
 bin=`dirname "${BASH_SOURCE-$0}"`
 bin=`cd "$bin"; pwd`
 
-DEFAULT_LIBEXEC_DIR="$bin"
+DEFAULT_LIBEXEC_DIR="$bin"/../libexec
 HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 . $HADOOP_LIBEXEC_DIR/yarn-config.sh
 
diff --git a/hadoop-mapreduce-project/hadoop-yarn/bin/start-all.sh b/hadoop-mapreduce-project/hadoop-yarn/bin/start-yarn.sh
similarity index 97%
rename from hadoop-mapreduce-project/hadoop-yarn/bin/start-all.sh
rename to hadoop-mapreduce-project/hadoop-yarn/bin/start-yarn.sh
index fa4fcf3d0d3..ccd63a44789 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/bin/start-all.sh
+++ b/hadoop-mapreduce-project/hadoop-yarn/bin/start-yarn.sh
@@ -23,7 +23,7 @@ echo "starting yarn daemons"
 bin=`dirname "${BASH_SOURCE-$0}"`
 bin=`cd "$bin"; pwd`
 
-DEFAULT_LIBEXEC_DIR="$bin"
+DEFAULT_LIBEXEC_DIR="$bin"/../libexec
 HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 . $HADOOP_LIBEXEC_DIR/yarn-config.sh
 
diff --git a/hadoop-mapreduce-project/hadoop-yarn/bin/stop-all.sh b/hadoop-mapreduce-project/hadoop-yarn/bin/stop-yarn.sh
similarity index 97%
rename from hadoop-mapreduce-project/hadoop-yarn/bin/stop-all.sh
rename to hadoop-mapreduce-project/hadoop-yarn/bin/stop-yarn.sh
index 546b67f5c96..c10d1ce7d18 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/bin/stop-all.sh
+++ b/hadoop-mapreduce-project/hadoop-yarn/bin/stop-yarn.sh
@@ -23,7 +23,7 @@ echo "stopping yarn daemons"
 bin=`dirname "${BASH_SOURCE-$0}"`
 bin=`cd "$bin"; pwd`
 
-DEFAULT_LIBEXEC_DIR="$bin"
+DEFAULT_LIBEXEC_DIR="$bin"/../libexec
 HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 . $HADOOP_LIBEXEC_DIR/yarn-config.sh
 
diff --git a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn
index b8e23a97f5e..f5c8c1f8e84 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn
+++ b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn
@@ -44,7 +44,7 @@
 bin=`dirname "${BASH_SOURCE-$0}"`
 bin=`cd "$bin"; pwd`
 
-DEFAULT_LIBEXEC_DIR="$bin"
+DEFAULT_LIBEXEC_DIR="$bin"/../libexec
 HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 . $HADOOP_LIBEXEC_DIR/yarn-config.sh
 
@@ -109,8 +109,7 @@ if [ ! -d "$HADOOP_CONF_DIR" ]; then
   exit 1
 fi
 
-CLASSPATH="${HADOOP_CONF_DIR}:${YARN_CONF_DIR}"
-CLASSPATH=${CLASSPATH}:${YARN_CLASSPATH}
+CLASSPATH="${HADOOP_CONF_DIR}:${YARN_CONF_DIR}:${CLASSPATH}"
 CLASSPATH=${CLASSPATH}:$JAVA_HOME/lib/tools.jar
 
 # for developers, add Hadoop classes to CLASSPATH
@@ -146,38 +145,6 @@ fi
 # so that filenames w/ spaces are handled correctly in loops below
 IFS=
 
-# add hadoop-common libs to CLASSPATH
-if [ ! -d "$HADOOP_COMMON_HOME" ]; then
-  if [ -d "$HADOOP_PREFIX" ]; then
-    export HADOOP_COMMON_HOME=$HADOOP_PREFIX
-  else
-    echo No HADOOP_COMMON_HOME set. 
-    echo Please specify it either in yarn-env.sh or in the environment.
-    exit 1
-  fi
-fi
-
-CLASSPATH=${CLASSPATH}:$HADOOP_COMMON_HOME/share/hadoop/common'/*'
-CLASSPATH=${CLASSPATH}:$HADOOP_COMMON_HOME/share/hadoop/common/lib'/*'
-
-# add hadoop-hdfs libs to CLASSPATH
-if [ ! -d "$HADOOP_HDFS_HOME" ]; then
-  if [ -d "$HADOOP_PREFIX" ]; then
-    export HADOOP_HDFS_HOME=$HADOOP_PREFIX
-  else
-    echo No HADOOP_HDFS_HOME set. 
-    echo Please specify it either in yarn-env.sh or in the environment.
-    exit 1
-  fi
-fi
-CLASSPATH=${CLASSPATH}:$HADOOP_HDFS_HOME/share/hadoop/hdfs'/*'
-CLASSPATH=${CLASSPATH}:$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib'/*'
-
-# add yarn libs to CLASSPATH
-
-CLASSPATH=${CLASSPATH}:$YARN_HOME/modules'/*'
-CLASSPATH=${CLASSPATH}:$YARN_HOME/lib'/*'
-
 # default log directory & file
 if [ "$YARN_LOG_DIR" = "" ]; then
   YARN_LOG_DIR="$YARN_HOME/logs"
diff --git a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-config.sh b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-config.sh
index 4371484b866..27570442731 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-config.sh
+++ b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-config.sh
@@ -15,29 +15,24 @@
 
 # included in all the hadoop scripts with source command
 # should not be executable directly
-# also should not be passed any arguments, since we need original $*
-
-# resolve links - $0 may be a softlink
-
-this="$0"
-while [ -h "$this" ]; do
-  ls=`ls -ld "$this"`
-  link=`expr "$ls" : '.*-> \(.*\)$'`
-  if expr "$link" : '.*/.*' > /dev/null; then
-    this="$link"
-  else
-    this=`dirname "$this"`/"$link"
-  fi
-done
-
-# convert relative path to absolute path
-bin=`dirname "$this"`
-script=`basename "$this"`
+bin=`which "$0"`
+bin=`dirname "${bin}"`
 bin=`cd "$bin"; pwd`
-this="$bin/$script"
 
-# the root of the Hadoop installation
-export YARN_HOME=`dirname "$this"`/..
+export HADOOP_PREFIX="${HADOOP_PREFIX:-$bin/..}"
+
+DEFAULT_LIBEXEC_DIR="$bin"/../libexec
+HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
+if [ -e "${HADOOP_LIBEXEC_DIR}/hadoop-config.sh" ]; then
+  . ${HADOOP_LIBEXEC_DIR}/hadoop-config.sh
+elif [ -e "${HADOOP_COMMON_HOME}/libexec/hadoop-config.sh" ]; then
+  . "$HADOOP_COMMON_HOME"/libexec/hadoop-config.sh
+elif [ -e "${HADOOP_HOME}/libexec/hadoop-config.sh" ]; then
+  . "$HADOOP_HOME"/libexec/hadoop-config.sh
+else
+  echo "Hadoop common not found."
+  exit
+fi
 
 # Same glibc bug that discovered in Hadoop.
 # Without this you can see very large vmem settings on containers.
@@ -56,7 +51,7 @@ then
 fi
  
 # Allow alternate conf dir location.
-YARN_CONF_DIR="${YARN_CONF_DIR:-$YARN_HOME/conf}"
+YARN_CONF_DIR="${HADOOP_CONF_DIR:-$YARN_HOME/conf}"
 
 #check to see it is specified whether to use the slaves or the
 # masters file
diff --git a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemon.sh b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemon.sh
index 99fcb0a5501..6e41f791c3e 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemon.sh
+++ b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemon.sh
@@ -39,7 +39,7 @@ fi
 bin=`dirname "${BASH_SOURCE-$0}"`
 bin=`cd "$bin"; pwd`
 
-DEFAULT_LIBEXEC_DIR="$bin"
+DEFAULT_LIBEXEC_DIR="$bin"/../libexec
 HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 . $HADOOP_LIBEXEC_DIR/yarn-config.sh
 
diff --git a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemons.sh b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemons.sh
index e34e4ca8b1e..aafb42b9b17 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemons.sh
+++ b/hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemons.sh
@@ -30,7 +30,7 @@ fi
 bin=`dirname "${BASH_SOURCE-$0}"`
 bin=`cd "$bin"; pwd`
 
-DEFAULT_LIBEXEC_DIR="$bin"
+DEFAULT_LIBEXEC_DIR="$bin"/../libexec
 HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
 . $HADOOP_LIBEXEC_DIR/yarn-config.sh
 
diff --git a/hadoop-mapreduce-project/hadoop-yarn/conf/yarn-env.sh b/hadoop-mapreduce-project/hadoop-yarn/conf/yarn-env.sh
index b219eddf1a3..cfcb250b8e3 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/conf/yarn-env.sh
+++ b/hadoop-mapreduce-project/hadoop-yarn/conf/yarn-env.sh
@@ -41,10 +41,6 @@ if [ "$YARN_HEAPSIZE" != "" ]; then
   #echo $JAVA_HEAP_MAX
 fi
 
-# CLASSPATH initially contains $YARN_CONF_DIR
-CLASSPATH="${YARN_CONF_DIR}"
-CLASSPATH=${CLASSPATH}:$JAVA_HOME/lib/tools.jar
-
 # so that filenames w/ spaces are handled correctly in loops below
 IFS=
 
diff --git a/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java b/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java
index c4d0d78ea5d..9439e21cfa0 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java
+++ b/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java
@@ -95,8 +95,8 @@ public interface ApplicationConstants {
         "$HADOOP_COMMON_HOME/share/hadoop/common/lib/*",
         "$HADOOP_HDFS_HOME/share/hadoop/hdfs/*",
         "$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib/*",
-        "$YARN_HOME/modules/*",
-        "$YARN_HOME/lib/*"
+        "$YARN_HOME/share/hadoop/mapreduce/*",
+        "$YARN_HOME/share/hadoop/mapreduce/lib/*"
       };
   
   /**
diff --git a/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/SingleCluster.apt.vm b/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/SingleCluster.apt.vm
index 3d34351708e..f4ea1fe69c7 100644
--- a/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/SingleCluster.apt.vm
+++ b/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/SingleCluster.apt.vm
@@ -171,20 +171,6 @@ Add the following configs to your <<<yarn-site.xml>>>
   </property>
 +---+
 
-* Create Symlinks.
-
-  You will have to create the following symlinks:
-
-+---+
-$ cd $HADOOP_COMMON_HOME/share/hadoop/common/lib/
-$ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-mapreduce-client-app-*-SNAPSHOT.jar .
-$ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-mapreduce-client-jobclient-*-SNAPSHOT.jar .
-$ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-mapreduce-client-common-*-SNAPSHOT.jar .
-$ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-mapreduce-client-shuffle-*-SNAPSHOT.jar .
-$ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-mapreduce-client-core-*-SNAPSHOT.jar .
-$ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-yarn-common-*-SNAPSHOT.jar .
-$ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-yarn-api-*-SNAPSHOT.jar .
-+---+
 * Running daemons.
 
   Assuming that the environment variables <<$HADOOP_COMMON_HOME>>, <<$HADOOP_HDFS_HOME>>, <<$HADOO_MAPRED_HOME>>,
@@ -195,8 +181,8 @@ $ ln -s $HADOOP_MAPRED_HOME/modules/hadoop-yarn-api-*-SNAPSHOT.jar .
   
 +---+
 $ cd $HADOOP_MAPRED_HOME
-$ bin/yarn-daemon.sh start resourcemanager
-$ bin/yarn-daemon.sh start nodemanager
+$ sbin/yarn-daemon.sh start resourcemanager
+$ sbin/yarn-daemon.sh start nodemanager
 +---+
 
   You should be up and running. You can run randomwriter as:
diff --git a/hadoop-mapreduce-project/pom.xml b/hadoop-mapreduce-project/pom.xml
index 74970dd5ee7..b9e64473cf6 100644
--- a/hadoop-mapreduce-project/pom.xml
+++ b/hadoop-mapreduce-project/pom.xml
@@ -34,6 +34,8 @@
     <test.timeout>600000</test.timeout>
     <fork.mode>once</fork.mode>
     <mr.basedir>${basedir}</mr.basedir>
+    <hadoop.component>mapreduce</hadoop.component>
+    <is.hadoop.component>true</is.hadoop.component>
   </properties>
 
   <modules>
@@ -321,7 +323,10 @@
 
   <profiles>
     <profile>
-      <id>release</id>
+      <id>dist</id>
+      <activation>
+        <activeByDefault>false</activeByDefault>
+      </activation>
       <build>
         <plugins>
           <plugin>
@@ -336,16 +341,6 @@
               </execution>
             </executions>
           </plugin>
-        </plugins>
-      </build>
-    </profile>
-    <profile>
-      <id>dist</id>
-      <activation>
-        <activeByDefault>false</activeByDefault>
-      </activation>
-      <build>
-        <plugins>
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-assembly-plugin</artifactId>
@@ -367,7 +362,7 @@
             </configuration>
             <executions>
               <execution>
-                <id>dist</id>
+                <id>package-mapreduce</id>
                 <phase>prepare-package</phase>
                 <goals>
                   <goal>single</goal>