Style fix

Author: coolfrood

core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala

@@ -55,8 +55,9 @@ class CoarseGrainedSchedulerBackend(scheduler: TaskSchedulerImpl, val rpcEnv: Rp
   val maxRegisteredWaitingTimeMs =
     conf.getTimeAsMs("spark.scheduler.maxRegisteredResourcesWaitingTime", "30s")
   val createTime = System.currentTimeMillis()
-  // If this CoarseGrainedSchedulerBackend is changed to support multiple threads, then this may need
-  // to be changed so that we don't share the serializer instance across threads
+  // If this CoarseGrainedSchedulerBackend is changed to support multiple threads,
+  // then this may need to be changed so that we don't share the serializer
+  // instance across threads
   private val ser = SparkEnv.get.closureSerializer.newInstance()
 
   private val executorDataMap = new HashMap[String, ExecutorData]