I have a standalone spark cluster and from within the same scala application I'm creating 2 different spark context to run two different spark streaming jobs as SparkConf is different for each of them.

I'm getting this error that... I don't really understand:

14/09/16 11:51:35 ERROR OneForOneStrategy: spark.httpBroadcast.uri
java.util.NoSuchElementException: spark.httpBroadcast.uri
	at org.apache.spark.SparkConf$$anonfun$get$1.apply(SparkConf.scala:149)
	at org.apache.spark.SparkConf$$anonfun$get$1.apply(SparkConf.scala:149)
	at scala.collection.MapLike$class.getOrElse(MapLike.scala:128)
	at scala.collection.AbstractMap.getOrElse(Map.scala:58)
	at org.apache.spark.SparkConf.get(SparkConf.scala:149)
	at org.apache.spark.broadcast.HttpBroadcast$.initialize(HttpBroadcast.scala:130)
	at org.apache.spark.broadcast.HttpBroadcastFactory.initialize(HttpBroadcastFactory.scala:31)
	at org.apache.spark.broadcast.BroadcastManager.initialize(BroadcastManager.scala:48)
	at org.apache.spark.broadcast.BroadcastManager.<init>(BroadcastManager.scala:35)
	at org.apache.spark.SparkEnv$.create(SparkEnv.scala:218)
	at org.apache.spark.executor.Executor.<init>(Executor.scala:85)
	at org.apache.spark.executor.CoarseGrainedExecutorBackend$$anonfun$receive$1.applyOrElse(CoarseGrainedExecutorBackend.scala:59)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498)
	at akka.actor.ActorCell.invoke(ActorCell.scala:456)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237)
	at akka.dispatch.Mailbox.run(Mailbox.scala:219)
	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386)
	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
14/09/16 11:51:35 ERROR CoarseGrainedExecutorBackend: Slave registration failed: Duplicate executor ID: 10

 Both apps has different names so I don't get how the executor ID is not unique :-S

This happens on startup and most of the time only one job dies, but sometimes both of them die.

Regards,

Luis