diff --git a/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala b/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala
index d8c0e2f66df01..9ba4114de00de 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala
@@ -242,8 +242,7 @@ private[spark] class CoarseMesosSchedulerBackend(
     for (r <- res if r.getName == name) {
       return r.getScalar.getValue
     }
-    // If we reached here, no resource with the required name was present
-    throw new IllegalArgumentException("No resource called " + name + " in " + res)
+    0
   }
 
   /** Build a Mesos resource protobuf object */
diff --git a/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerBackend.scala b/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerBackend.scala
index 8e2faff90f9b2..1c8cbb5a01e6f 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerBackend.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerBackend.scala
@@ -278,8 +278,7 @@ private[spark] class MesosSchedulerBackend(
     for (r <- res if r.getName == name) {
       return r.getScalar.getValue
     }
-    // If we reached here, no resource with the required name was present
-    throw new IllegalArgumentException("No resource called " + name + " in " + res)
+    0
   }
 
   /** Turn a Spark TaskDescription into a Mesos task */