diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index 8a988258916..75dca8f6321 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -557,6 +557,9 @@ Release 2.1.0-beta - UNRELEASED
 
     MAPREDUCE-5319. Set user.name in job.xml. (Xuan Gong via acmurthy)
 
+    MAPREDUCE-5310. MRAM should not normalize allocation request capabilities.
+    (tucu)
+
 Release 2.0.5-alpha - 06/06/2013
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMCommunicator.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMCommunicator.java
index 27f2b27a3d8..72fc4cab26c 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMCommunicator.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMCommunicator.java
@@ -72,7 +72,6 @@ public abstract class RMCommunicator extends AbstractService
   protected AMRMProtocol scheduler;
   private final ClientService clientService;
   protected int lastResponseID;
-  private Resource minContainerCapability;
   private Resource maxContainerCapability;
   protected Map<ApplicationAccessType, String> applicationACLs;
   private volatile long lastHeartbeatTime;
@@ -152,14 +151,10 @@ public abstract class RMCommunicator extends AbstractService
       }
       RegisterApplicationMasterResponse response =
         scheduler.registerApplicationMaster(request);
-      minContainerCapability = response.getMinimumResourceCapability();
       maxContainerCapability = response.getMaximumResourceCapability();
-      this.context.getClusterInfo().setMinContainerCapability(
-          minContainerCapability);
       this.context.getClusterInfo().setMaxContainerCapability(
           maxContainerCapability);
       this.applicationACLs = response.getApplicationACLs();
-      LOG.info("minContainerCapability: " + minContainerCapability.getMemory());
       LOG.info("maxContainerCapability: " + maxContainerCapability.getMemory());
     } catch (Exception are) {
       LOG.error("Exception while registering", are);
@@ -202,10 +197,6 @@ public abstract class RMCommunicator extends AbstractService
     }
   }
 
-  protected Resource getMinContainerCapability() {
-    return minContainerCapability;
-  }
-
   protected Resource getMaxContainerCapability() {
     return maxContainerCapability;
   }
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMContainerAllocator.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMContainerAllocator.java
index 2799e9292cb..ec8480a59b6 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMContainerAllocator.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/rm/RMContainerAllocator.java
@@ -291,9 +291,6 @@ public class RMContainerAllocator extends RMContainerRequestor
       if (reqEvent.getAttemptID().getTaskId().getTaskType().equals(TaskType.MAP)) {
         if (mapResourceReqt == 0) {
           mapResourceReqt = reqEvent.getCapability().getMemory();
-          int minSlotMemSize = getMinContainerCapability().getMemory();
-          mapResourceReqt = (int) Math.ceil((float) mapResourceReqt/minSlotMemSize)
-              * minSlotMemSize;
           eventHandler.handle(new JobHistoryEvent(jobId, 
               new NormalizedResourceEvent(org.apache.hadoop.mapreduce.TaskType.MAP,
               mapResourceReqt)));
@@ -314,10 +311,6 @@ public class RMContainerAllocator extends RMContainerRequestor
       } else {
         if (reduceResourceReqt == 0) {
           reduceResourceReqt = reqEvent.getCapability().getMemory();
-          int minSlotMemSize = getMinContainerCapability().getMemory();
-          //round off on slotsize
-          reduceResourceReqt = (int) Math.ceil((float) 
-              reduceResourceReqt/minSlotMemSize) * minSlotMemSize;
           eventHandler.handle(new JobHistoryEvent(jobId, 
               new NormalizedResourceEvent(
                   org.apache.hadoop.mapreduce.TaskType.REDUCE,
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRMContainerAllocator.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRMContainerAllocator.java
index 9286b6ad8bb..4bda49e5d88 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRMContainerAllocator.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestRMContainerAllocator.java
@@ -1401,11 +1401,6 @@ public class TestRMContainerAllocator {
     protected void unregister() {
     }
 
-    @Override
-    protected Resource getMinContainerCapability() {
-      return Resource.newInstance(1024, 1);
-    }
-
     @Override
     protected Resource getMaxContainerCapability() {
       return Resource.newInstance(10240, 1);