Не удалось связать с: искровым мастером, используя удаленный кластер с двумя рабочими

Мне удается получить все, что работает с местным мастером и двумя удаленными сотрудниками. Теперь я хочу подключиться к удаленному мастеру с теми же удаленными сотрудниками. Я пробовал разные комбинации настроек с /etc/hosts и другими рекомендациями в Интернете, но НИЧЕГО не работал.

Основной класс:

public static void main(String[] args) {
    ScalaInterface sInterface = new ScalaInterface(CHUNK_SIZE,
            "awsAccessKeyId",
            "awsSecretAccessKey");

    SparkConf conf = new SparkConf().setAppName("POC_JAVA_AND_SPARK")
            .setMaster("spark://spark-master:7077");

    org.apache.spark.SparkContext sc = new org.apache.spark.SparkContext(
            conf);

    sInterface.enableS3Connection(sc);
    org.apache.spark.rdd.RDD<Tuple2<Path, Text>> fileAndLine = (RDD<Tuple2<Path, Text>>) sInterface.getMappedRDD(sc, "s3n://somebucket/");

    org.apache.spark.rdd.RDD<String> pInfo = (RDD<String>) sInterface.mapPartitionsWithIndex(fileAndLine);

    JavaRDD<String> pInfoJ = pInfo.toJavaRDD();

    List<String> result = pInfoJ.collect();

    String miscInfo = sInterface.getMiscInfo(sc, pInfo);

    System.out.println(miscInfo);

}

Он не работает:

List<String> result = pInfoJ.collect();

Ошибка, которую я получаю:

1354 [sparkDriver-akka.actor.default-dispatcher-3] ERROR akka.remote.transport.netty.NettyTransport  - failed to bind to spark-master/192.168.0.191:0, shutting down Netty transport
1354 [main] WARN  org.apache.spark.util.Utils  - Service 'sparkDriver' could not bind on port 0. Attempting port 1.
1355 [main] DEBUG org.apache.spark.util.AkkaUtils  - In createActorSystem, requireCookie is: off
1363 [sparkDriver-akka.actor.default-dispatcher-3] INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator  - Shutting down remote daemon.
1364 [sparkDriver-akka.actor.default-dispatcher-3] INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator  - Remote daemon shut down; proceeding with flushing remote transports.
1364 [sparkDriver-akka.actor.default-dispatcher-5] INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator  - Remoting shut down.
1367 [sparkDriver-akka.actor.default-dispatcher-4] INFO  akka.event.slf4j.Slf4jLogger  - Slf4jLogger started
1370 [sparkDriver-akka.actor.default-dispatcher-6] INFO  Remoting  - Starting remoting
1380 [sparkDriver-akka.actor.default-dispatcher-4] ERROR akka.remote.transport.netty.NettyTransport  - failed to bind to spark-master/192.168.0.191:0, shutting down Netty transport
Exception in thread "main" 1382 [sparkDriver-akka.actor.default-dispatcher-6] INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator  - Shutting down remote daemon.
1382 [sparkDriver-akka.actor.default-dispatcher-6] INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator  - Remote daemon shut down; proceeding with flushing remote transports.
java.net.BindException: Failed to bind to: spark-master/192.168.0.191:0: Service 'sparkDriver' failed after 16 retries!
    at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:272)
    at akka.remote.transport.netty.NettyTransport$$anonfun$listen$1.apply(NettyTransport.scala:393)
    at akka.remote.transport.netty.NettyTransport$$anonfun$listen$1.apply(NettyTransport.scala:389)
    at scala.util.Success$$anonfun$map$1.apply(Try.scala:206)
    at scala.util.Try$.apply(Try.scala:161)
    at scala.util.Success.map(Try.scala:206)
    at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
    at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
    at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
    at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.processBatch$1(BatchingExecutor.scala:67)
    at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:82)
    at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:59)
    at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:59)
    at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)
    at akka.dispatch.BatchingExecutor$Batch.run(BatchingExecutor.scala:58)
    at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41)
    at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)
    at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
    at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
    at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
    at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
1383 [sparkDriver-akka.actor.default-dispatcher-7] INFO  akka.remote.RemoteActorRefProvider$RemotingTerminator  - Remoting shut down.
1385 [delete Spark temp dirs] DEBUG org.apache.spark.util.Utils  - Shutdown hook called

Благодарим вас за помощь!