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-rw-r--r--core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala1
1 files changed, 1 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala b/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
index 917cce1f96..c82ae4baa3 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
@@ -24,6 +24,7 @@ import java.util.concurrent.atomic.AtomicInteger
import scala.collection.mutable.{ArrayBuffer, HashMap, HashSet, Map, Stack}
import scala.concurrent.duration._
+import scala.language.existentials
import scala.language.postfixOps
import scala.util.control.NonFatal