diff --git a/core/src/main/scala/org/apache/spark/scheduler/SchedulableBuilder.scala b/core/src/main/scala/org/apache/spark/scheduler/SchedulableBuilder.scala
index 3cf995ea74244..50d88994f7e53 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/SchedulableBuilder.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/SchedulableBuilder.scala
@@ -61,7 +61,7 @@ private[spark] class FairSchedulableBuilder(val rootPool: Pool, conf: SparkConf)
   val WEIGHT_PROPERTY = "weight"
   val POOL_NAME_PROPERTY = "@name"
   val POOLS_PROPERTY = "pool"
-  val DEFAULT_SCHEDULING_MODE = SchedulingMode.FIFO
+  val DEFAULT_SCHEDULING_MODE = SchedulingMode.FAIR
   val DEFAULT_MINIMUM_SHARE = 0
   val DEFAULT_WEIGHT = 1