diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index c52863aef3..2b0bc80e69 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -86,6 +86,8 @@ Release 2.0.3-alpha - Unreleased
     YARN-150. Fixes AppRejectedTransition does not unregister a rejected
     app-attempt from the ApplicationMasterService (Bikas Saha via sseth)
 
+    YARN-140. Add capacity-scheduler-default.xml to provide a default set of configurations for the capacity scheduler. (ahmed via tucu)
+
 Release 2.0.2-alpha - 2012-09-07 
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/resources/capacity-scheduler.xml b/hadoop-yarn-project/hadoop-yarn/conf/capacity-scheduler.xml
similarity index 86%
rename from hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/resources/capacity-scheduler.xml
rename to hadoop-yarn-project/hadoop-yarn/conf/capacity-scheduler.xml
index 65ef0a2394..66ea5d6d1b 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/resources/capacity-scheduler.xml
+++ b/hadoop-yarn-project/hadoop-yarn/conf/capacity-scheduler.xml
@@ -26,17 +26,6 @@
     </description>
   </property>
 
-  <property>
-    <name>yarn.scheduler.capacity.root.capacity</name>
-    <value>100</value>
-    <description>
-      The total capacity as a percentage out of 100 for this queue.
-      If it has child queues then this includes their capacity as well.
-      The child queues capacity should add up to their parent queue's capacity
-      or less.
-    </description>
-  </property>
-
   <property>
     <name>yarn.scheduler.capacity.root.default.capacity</name>
     <value>100</value>
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/pom.xml b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/pom.xml
index 7f5465c495..503d0e2067 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/pom.xml
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/pom.xml
@@ -44,6 +44,20 @@
   </dependencies>
 
   <build>
+
+    <testResources>
+     <testResource>
+       <directory>${basedir}/src/test/resources</directory>
+     </testResource>
+     <testResource>
+       <directory>${basedir}/../../conf</directory>
+       <includes>
+         <include>capacity-scheduler.xml</include>
+       </includes>
+     </testResource>
+    </testResources>
+
+
     <plugins>
 
       <!-- Publish tests jar -->
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java
index 540bfcbfd8..537a689fc0 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java
@@ -172,7 +172,8 @@ public float getMaximumApplicationMasterResourcePerQueuePercent(String queue) {
   }
   
   public float getCapacity(String queue) {
-    float capacity = getFloat(getQueuePrefix(queue) + CAPACITY, UNDEFINED);
+    float capacity = queue.equals("root") ? 100.0f : getFloat(
+        getQueuePrefix(queue) + CAPACITY, UNDEFINED);
     if (capacity < MINIMUM_CAPACITY_VALUE || capacity > MAXIMUM_CAPACITY_VALUE) {
       throw new IllegalArgumentException("Illegal " +
       		"capacity of " + capacity + " for queue " + queue);
@@ -183,6 +184,10 @@ public float getCapacity(String queue) {
   }
   
   public void setCapacity(String queue, float capacity) {
+    if (queue.equals("root")) {
+      throw new IllegalArgumentException(
+          "Cannot set capacity, root queue has a fixed capacity of 100.0f");
+    }
     setFloat(getQueuePrefix(queue) + CAPACITY, capacity);
     LOG.debug("CSConf - setCapacity: queuePrefix=" + getQueuePrefix(queue) + 
         ", capacity=" + capacity);
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestApplicationLimits.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestApplicationLimits.java
index f2f0e8d770..123b88f821 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestApplicationLimits.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestApplicationLimits.java
@@ -100,8 +100,7 @@ private void setupQueueConfiguration(CapacitySchedulerConfiguration conf) {
     
     // Define top-level queues
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {A, B});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
-    
+
     final String Q_A = CapacitySchedulerConfiguration.ROOT + "." + A;
     conf.setCapacity(Q_A, 10);
     
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java
index 3942aee3e1..8a7b89eaf2 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java
@@ -221,8 +221,7 @@ private void setupQueueConfiguration(CapacitySchedulerConfiguration conf) {
     
     // Define top-level queues
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {"a", "b"});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
-    
+
     conf.setCapacity(A, A_CAPACITY);
     conf.setCapacity(B, B_CAPACITY);
     
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java
index 93766b9355..f9d6c60479 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java
@@ -135,7 +135,6 @@ private void setupQueueConfiguration(
     
     // Define top-level queues
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {newRoot});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
     conf.setMaximumCapacity(CapacitySchedulerConfiguration.ROOT, 100);
     conf.setAcl(CapacitySchedulerConfiguration.ROOT, QueueACL.SUBMIT_APPLICATIONS, " ");
     
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestParentQueue.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestParentQueue.java
index 602c09c0d1..998e897eb5 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestParentQueue.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestParentQueue.java
@@ -90,7 +90,6 @@ private void setupSingleLevelQueues(CapacitySchedulerConfiguration conf) {
     
     // Define top-level queues
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {A, B});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
     
     final String Q_A = CapacitySchedulerConfiguration.ROOT + "." + A;
     conf.setCapacity(Q_A, 30);
@@ -344,7 +343,6 @@ private void setupMultiLevelQueues(CapacitySchedulerConfiguration conf) {
     
     // Define top-level queues
     csConf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {A, B, C, D});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
     
     final String Q_A = CapacitySchedulerConfiguration.ROOT + "." + A;
     conf.setCapacity(Q_A, 10);
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestQueueParsing.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestQueueParsing.java
index 1858ddd40a..e529815cf2 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestQueueParsing.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestQueueParsing.java
@@ -66,8 +66,7 @@ private void setupQueueConfiguration(CapacitySchedulerConfiguration conf) {
     
     // Define top-level queues
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {"a", "b", "c"});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
-    
+
     final String A = CapacitySchedulerConfiguration.ROOT + ".a";
     conf.setCapacity(A, 10);
     conf.setMaximumCapacity(A, 15);
@@ -148,7 +147,6 @@ public void testMaxCapacity() throws Exception {
     CapacitySchedulerConfiguration conf = new CapacitySchedulerConfiguration();
 
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {"a", "b", "c"});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
 
     final String A = CapacitySchedulerConfiguration.ROOT + ".a";
     conf.setCapacity(A, 50);
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebApp.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebApp.java
index 924d02cec3..67b290319f 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebApp.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebApp.java
@@ -215,7 +215,6 @@ public static ApplicationACLsManager mockAppACLsManager() {
   static void setupQueueConfiguration(CapacitySchedulerConfiguration conf) {
     // Define top-level queues
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] {"a", "b", "c"});
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
 
     final String A = CapacitySchedulerConfiguration.ROOT + ".a";
     conf.setCapacity(A, 10);
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesCapacitySched.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesCapacitySched.java
index c0b58619cd..04b7f01df3 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesCapacitySched.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/TestRMWebServicesCapacitySched.java
@@ -121,7 +121,6 @@ private static void setupQueueConfiguration(
 
     // Define top-level queues
     conf.setQueues(CapacitySchedulerConfiguration.ROOT, new String[] { "a", "b" });
-    conf.setCapacity(CapacitySchedulerConfiguration.ROOT, 100);
 
     final String A = CapacitySchedulerConfiguration.ROOT + ".a";
     conf.setCapacity(A, 10.5f);