diff --git a/core/pom.xml b/core/pom.xml
index 3e6e98cd2cf92..4d7d41a9714d7 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -102,10 +102,6 @@
       <groupId>org.xerial.snappy</groupId>
       <artifactId>snappy-java</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.ow2.asm</groupId>
-      <artifactId>asm</artifactId>
-    </dependency>
     <dependency>
       <groupId>com.twitter</groupId>
       <artifactId>chill_${scala.binary.version}</artifactId>
diff --git a/core/src/main/scala/org/apache/spark/util/ClosureCleaner.scala b/core/src/main/scala/org/apache/spark/util/ClosureCleaner.scala
index 681d0a30cb3f8..a8d20ee332355 100644
--- a/core/src/main/scala/org/apache/spark/util/ClosureCleaner.scala
+++ b/core/src/main/scala/org/apache/spark/util/ClosureCleaner.scala
@@ -22,8 +22,8 @@ import java.io.{ByteArrayInputStream, ByteArrayOutputStream}
 import scala.collection.mutable.Map
 import scala.collection.mutable.Set
 
-import org.objectweb.asm.{ClassReader, ClassVisitor, MethodVisitor, Type}
-import org.objectweb.asm.Opcodes._
+import com.esotericsoftware.reflectasm.shaded.org.objectweb.asm.{ClassReader, ClassVisitor, MethodVisitor, Type}
+import com.esotericsoftware.reflectasm.shaded.org.objectweb.asm.Opcodes._
 
 import org.apache.spark.Logging
 
diff --git a/graphx/src/main/scala/org/apache/spark/graphx/util/BytecodeUtils.scala b/graphx/src/main/scala/org/apache/spark/graphx/util/BytecodeUtils.scala
index d1528e2f07cf2..014a7335f85cc 100644
--- a/graphx/src/main/scala/org/apache/spark/graphx/util/BytecodeUtils.scala
+++ b/graphx/src/main/scala/org/apache/spark/graphx/util/BytecodeUtils.scala
@@ -23,8 +23,8 @@ import scala.collection.mutable.HashSet
 
 import org.apache.spark.util.Utils
 
-import org.objectweb.asm.{ClassReader, ClassVisitor, MethodVisitor}
-import org.objectweb.asm.Opcodes._
+import com.esotericsoftware.reflectasm.shaded.org.objectweb.asm.{ClassReader, ClassVisitor, MethodVisitor}
+import com.esotericsoftware.reflectasm.shaded.org.objectweb.asm.Opcodes._
 
 
 /**
diff --git a/pom.xml b/pom.xml
index 3b863856e4634..f0c877dcfe7b2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -221,11 +221,6 @@
         <artifactId>snappy-java</artifactId>
         <version>1.0.5</version>
       </dependency>
-      <dependency>
-        <groupId>org.ow2.asm</groupId>
-        <artifactId>asm</artifactId>
-        <version>4.0</version>
-      </dependency>
       <dependency>
         <groupId>com.clearspring.analytics</groupId>
         <artifactId>stream</artifactId>
@@ -245,11 +240,31 @@
         <groupId>com.twitter</groupId>
         <artifactId>chill_${scala.binary.version}</artifactId>
         <version>0.3.1</version>
+        <exclusions>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm-commons</artifactId>
+         </exclusion>
+        </exclusions>
       </dependency>
       <dependency>
         <groupId>com.twitter</groupId>
         <artifactId>chill-java</artifactId>
         <version>0.3.1</version>
+        <exclusions>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm-commons</artifactId>
+         </exclusion>
+        </exclusions>
       </dependency>
       <dependency>
         <groupId>${akka.group}</groupId>
@@ -435,6 +450,10 @@
             <groupId>asm</groupId>
             <artifactId>asm</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm</artifactId>
+          </exclusion>
           <exclusion>
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
@@ -474,6 +493,10 @@
             <groupId>asm</groupId>
             <artifactId>asm</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm</artifactId>
+          </exclusion>
           <exclusion>
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
@@ -489,6 +512,10 @@
             <groupId>asm</groupId>
             <artifactId>asm</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm</artifactId>
+          </exclusion>
           <exclusion>
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
@@ -505,6 +532,10 @@
             <groupId>asm</groupId>
             <artifactId>asm</artifactId>
           </exclusion>
+          <exclusion>
+            <groupId>org.ow2.asm</groupId>
+            <artifactId>asm</artifactId>
+          </exclusion>
           <exclusion>
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 138aad7561043..8fa220c413291 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -257,7 +257,8 @@ object SparkBuild extends Build {
   val slf4jVersion = "1.7.5"
 
   val excludeNetty = ExclusionRule(organization = "org.jboss.netty")
-  val excludeAsm = ExclusionRule(organization = "asm")
+  val excludeAsm = ExclusionRule(organization = "org.ow2.asm")
+  val excludeOldAsm = ExclusionRule(organization = "asm")
   val excludeCommonsLogging = ExclusionRule(organization = "commons-logging")
   val excludeSLF4J = ExclusionRule(organization = "org.slf4j")
   val excludeScalap = ExclusionRule(organization = "org.scala-lang", artifact = "scalap")
@@ -280,7 +281,6 @@ object SparkBuild extends Build {
         "commons-daemon"             % "commons-daemon"   % "1.0.10", // workaround for bug HADOOP-9407
         "com.ning"                   % "compress-lzf"     % "1.0.0",
         "org.xerial.snappy"          % "snappy-java"      % "1.0.5",
-        "org.ow2.asm"                % "asm"              % "4.0",
         "org.spark-project.akka"    %% "akka-remote"      % "2.2.3-shaded-protobuf"  excludeAll(excludeNetty),
         "org.spark-project.akka"    %% "akka-slf4j"       % "2.2.3-shaded-protobuf"  excludeAll(excludeNetty),
         "org.spark-project.akka"    %% "akka-testkit"     % "2.2.3-shaded-protobuf" % "test",
@@ -291,15 +291,15 @@ object SparkBuild extends Build {
         "commons-net"                % "commons-net"      % "2.2",
         "net.java.dev.jets3t"        % "jets3t"           % "0.7.1" excludeAll(excludeCommonsLogging),
         "org.apache.derby"           % "derby"            % "10.4.2.0"                     % "test",
-        "org.apache.hadoop"          % hadoopClient       % hadoopVersion excludeAll(excludeNetty, excludeAsm, excludeCommonsLogging, excludeSLF4J),
+        "org.apache.hadoop"          % hadoopClient       % hadoopVersion excludeAll(excludeNetty, excludeAsm, excludeCommonsLogging, excludeSLF4J, excludeOldAsm),
         "org.apache.curator"         % "curator-recipes"  % "2.4.0" excludeAll(excludeNetty),
         "com.codahale.metrics"       % "metrics-core"     % "3.0.0",
         "com.codahale.metrics"       % "metrics-jvm"      % "3.0.0",
         "com.codahale.metrics"       % "metrics-json"     % "3.0.0",
         "com.codahale.metrics"       % "metrics-ganglia"  % "3.0.0",
         "com.codahale.metrics"       % "metrics-graphite" % "3.0.0",
-        "com.twitter"               %% "chill"            % "0.3.1",
-        "com.twitter"                % "chill-java"       % "0.3.1",
+        "com.twitter"               %% "chill"            % "0.3.1" excludeAll(excludeAsm),
+        "com.twitter"                % "chill-java"       % "0.3.1" excludeAll(excludeAsm),
         "com.clearspring.analytics"  % "stream"           % "2.5.1"
       ),
     libraryDependencies ++= maybeAvro
@@ -320,7 +320,7 @@ object SparkBuild extends Build {
     name := "spark-examples",
     libraryDependencies ++= Seq(
       "com.twitter"          %% "algebird-core"   % "0.1.11",
-      "org.apache.hbase" % "hbase" % HBASE_VERSION excludeAll(excludeNetty, excludeAsm, excludeCommonsLogging),
+      "org.apache.hbase" % "hbase" % HBASE_VERSION excludeAll(excludeNetty, excludeAsm, excludeOldAsm, excludeCommonsLogging),
       "org.apache.cassandra" % "cassandra-all" % "1.2.6"
         exclude("com.google.guava", "guava")
         exclude("com.googlecode.concurrentlinkedhashmap", "concurrentlinkedhashmap-lru")
@@ -397,10 +397,10 @@ object SparkBuild extends Build {
   def yarnEnabledSettings = Seq(
     libraryDependencies ++= Seq(
       // Exclude rule required for all ?
-      "org.apache.hadoop" % hadoopClient         % hadoopVersion excludeAll(excludeNetty, excludeAsm),
-      "org.apache.hadoop" % "hadoop-yarn-api"    % hadoopVersion excludeAll(excludeNetty, excludeAsm),
-      "org.apache.hadoop" % "hadoop-yarn-common" % hadoopVersion excludeAll(excludeNetty, excludeAsm),
-      "org.apache.hadoop" % "hadoop-yarn-client" % hadoopVersion excludeAll(excludeNetty, excludeAsm)
+      "org.apache.hadoop" % hadoopClient         % hadoopVersion excludeAll(excludeNetty, excludeAsm, excludeOldAsm),
+      "org.apache.hadoop" % "hadoop-yarn-api"    % hadoopVersion excludeAll(excludeNetty, excludeAsm, excludeOldAsm),
+      "org.apache.hadoop" % "hadoop-yarn-common" % hadoopVersion excludeAll(excludeNetty, excludeAsm, excludeOldAsm),
+      "org.apache.hadoop" % "hadoop-yarn-client" % hadoopVersion excludeAll(excludeNetty, excludeAsm, excludeOldAsm)
     )
   )
 
diff --git a/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala b/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala
index 1aa94079fd0ae..ee972887feda6 100644
--- a/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala
@@ -27,8 +27,9 @@ import org.apache.hadoop.fs.{FileSystem, Path}
 import org.apache.spark.SparkEnv
 import org.apache.spark.util.Utils
 
-import org.objectweb.asm._
-import org.objectweb.asm.Opcodes._
+
+import com.esotericsoftware.reflectasm.shaded.org.objectweb.asm._
+import com.esotericsoftware.reflectasm.shaded.org.objectweb.asm.Opcodes._
 
 
 /**