diff --git a/core/pom.xml b/core/pom.xml
index 6626d7c1b..2afd25082 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -125,6 +125,15 @@
             <groupId>org.json4s</groupId>
             <artifactId>json4s-jackson_${scala.binary.version}</artifactId>
             <version>3.2.6</version>
+            <!-- see also exclusion for lift-json; this is necessary since it depends on
+                 scala-library and scalap 2.10.0, but we use 2.10.3, and only override
+                 scala-library -->
+            <exclusions>
+              <exclusion>
+                <groupId>org.scala-lang</groupId>
+                <artifactId>scalap</artifactId>
+              </exclusion>
+            </exclusions>
         </dependency>
         <dependency>
             <groupId>it.unimi.dsi</groupId>
diff --git a/examples/pom.xml b/examples/pom.xml
index 709907cb7..d952e2ca4 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -169,14 +169,6 @@
           <groupId>org.apache.cassandra.deps</groupId>
           <artifactId>avro</artifactId>
         </exclusion>
-        <exclusion>
-          <groupId>org.sonatype.sisu.inject</groupId>
-          <artifactId>*</artifactId>
-        </exclusion>
-        <exclusion>
-          <groupId>org.xerial.snappy</groupId>
-          <artifactId>*</artifactId>
-        </exclusion>
       </exclusions>
     </dependency>
   </dependencies>
diff --git a/external/flume/pom.xml b/external/flume/pom.xml
index 95ff87219..bc00ab457 100644
--- a/external/flume/pom.xml
+++ b/external/flume/pom.xml
@@ -53,10 +53,6 @@
           <groupId>org.jboss.netty</groupId>
           <artifactId>netty</artifactId>
         </exclusion>
-        <exclusion>
-          <groupId>org.xerial.snappy</groupId>
-          <artifactId>*</artifactId>
-        </exclusion>
       </exclusions>
     </dependency>
     <dependency>
diff --git a/pom.xml b/pom.xml
index 39995396b..7e04efaa9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -310,6 +310,9 @@
         <groupId>net.liftweb</groupId>
         <artifactId>lift-json_${scala.binary.version}</artifactId>
         <version>2.5.1</version>
+        <!-- see also exclusion for json4s; this is necessary since it depends on
+             scala-library and scalap 2.10.0, but we use 2.10.3, and only override
+             scala-library -->
         <exclusions>
           <exclusion>
             <groupId>org.scala-lang</groupId>
@@ -374,7 +377,7 @@
         <version>3.1</version>
         <scope>test</scope>
       </dependency>
-     <dependency>
+      <dependency>
         <groupId>org.mockito</groupId>
         <artifactId>mockito-all</artifactId>
         <version>1.8.5</version>
@@ -416,14 +419,6 @@
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
           </exclusion>
-          <exclusion>
-            <groupId>org.codehaus.jackson</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
-          <exclusion>
-            <groupId>org.sonatype.sisu.inject</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
           <exclusion>
             <groupId>commons-logging</groupId>
             <artifactId>commons-logging</artifactId>
@@ -448,14 +443,6 @@
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
           </exclusion>
-          <exclusion>
-            <groupId>org.codehaus.jackson</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
-          <exclusion>
-            <groupId>org.sonatype.sisu.inject</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
         </exclusions>
       </dependency>
       <dependency>
@@ -471,14 +458,6 @@
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
           </exclusion>
-          <exclusion>
-            <groupId>org.codehaus.jackson</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
-          <exclusion>
-            <groupId>org.sonatype.sisu.inject</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
         </exclusions>
       </dependency>
 
@@ -495,14 +474,6 @@
             <groupId>org.jboss.netty</groupId>
             <artifactId>netty</artifactId>
           </exclusion>
-          <exclusion>
-            <groupId>org.codehaus.jackson</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
-          <exclusion>
-            <groupId>org.sonatype.sisu.inject</groupId>
-            <artifactId>*</artifactId>
-          </exclusion>
         </exclusions>
       </dependency>
     </dependencies>
diff --git a/project/SparkBuild.scala b/project/SparkBuild.scala
index 399886ca1..d45f6773f 100644
--- a/project/SparkBuild.scala
+++ b/project/SparkBuild.scala
@@ -243,13 +243,11 @@ object SparkBuild extends Build {
 
   val slf4jVersion = "1.7.5"
 
-  val excludeCglib = ExclusionRule(organization = "org.sonatype.sisu.inject")
-  val excludeJackson = ExclusionRule(organization = "org.codehaus.jackson")
   val excludeNetty = ExclusionRule(organization = "org.jboss.netty")
   val excludeAsm = ExclusionRule(organization = "asm")
-  val excludeSnappy = ExclusionRule(organization = "org.xerial.snappy")
   val excludeCommonsLogging = ExclusionRule(organization = "commons-logging")
   val excludeSLF4J = ExclusionRule(organization = "org.slf4j")
+  val excludeScalap = ExclusionRule(organization = "org.scala-lang", artifact = "scalap")
 
   def coreSettings = sharedSettings ++ Seq(
     name := "spark-core",
@@ -273,13 +271,13 @@ object SparkBuild extends Build {
         "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",
-        "org.json4s"                %% "json4s-jackson"   % "3.2.6",
+        "org.json4s"                %% "json4s-jackson"   % "3.2.6" excludeAll(excludeScalap),
         "it.unimi.dsi"               % "fastutil"         % "6.4.4",
         "colt"                       % "colt"             % "1.2.0",
         "org.apache.mesos"           % "mesos"            % "0.13.0",
         "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(excludeJackson, excludeNetty, excludeAsm, excludeCglib, excludeCommonsLogging, excludeSLF4J),
+        "org.apache.hadoop"          % hadoopClient       % hadoopVersion excludeAll(excludeNetty, excludeAsm, excludeCommonsLogging, excludeSLF4J),
         "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",
@@ -316,7 +314,7 @@ object SparkBuild extends Build {
         exclude("io.netty", "netty")
         exclude("jline","jline")
         exclude("org.apache.cassandra.deps", "avro")
-        excludeAll(excludeSnappy, excludeCglib, excludeSLF4J)
+        excludeAll(excludeSLF4J)
     )
   ) ++ assemblySettings ++ extraAssemblySettings
 
@@ -379,10 +377,10 @@ object SparkBuild extends Build {
   def yarnEnabledSettings = Seq(
     libraryDependencies ++= Seq(
       // Exclude rule required for all ?
-      "org.apache.hadoop" % hadoopClient         % hadoopVersion excludeAll(excludeJackson, excludeNetty, excludeAsm, excludeCglib),
-      "org.apache.hadoop" % "hadoop-yarn-api"    % hadoopVersion excludeAll(excludeJackson, excludeNetty, excludeAsm, excludeCglib),
-      "org.apache.hadoop" % "hadoop-yarn-common" % hadoopVersion excludeAll(excludeJackson, excludeNetty, excludeAsm, excludeCglib),
-      "org.apache.hadoop" % "hadoop-yarn-client" % hadoopVersion excludeAll(excludeJackson, excludeNetty, excludeAsm, excludeCglib)
+      "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)
     )
   )
 
@@ -428,7 +426,7 @@ object SparkBuild extends Build {
   def flumeSettings() = sharedSettings ++ Seq(
     name := "spark-streaming-flume",
     libraryDependencies ++= Seq(
-      "org.apache.flume" % "flume-ng-sdk" % "1.2.0" % "compile" excludeAll(excludeNetty, excludeSnappy)
+      "org.apache.flume" % "flume-ng-sdk" % "1.2.0" % "compile" excludeAll(excludeNetty)
     )
   )
 
diff --git a/streaming/pom.xml b/streaming/pom.xml
index 2f358c993..1f3366e25 100644
--- a/streaming/pom.xml
+++ b/streaming/pom.xml
@@ -55,11 +55,6 @@
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-server</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.codehaus.jackson</groupId>
-      <artifactId>jackson-mapper-asl</artifactId>
-      <version>1.9.11</version>
-    </dependency>
     <dependency>
       <groupId>org.scala-lang</groupId>
       <artifactId>scala-library</artifactId>