diff --git a/core/src/main/scala/org/apache/spark/util/Utils.scala b/core/src/main/scala/org/apache/spark/util/Utils.scala
index 61d8ef5efeb000a162c4770408f5f67bac88bec6..64acfbd3526f3a36a0af4f22e5f635a3a87185ab 100644
--- a/core/src/main/scala/org/apache/spark/util/Utils.scala
+++ b/core/src/main/scala/org/apache/spark/util/Utils.scala
@@ -26,6 +26,7 @@ import scala.collection.JavaConversions._
 import scala.collection.Map
 import scala.collection.mutable.ArrayBuffer
 import scala.io.Source
+import scala.reflect.ClassTag
 
 import com.google.common.io.Files
 import com.google.common.util.concurrent.ThreadFactoryBuilder