Can'；t从Java连接到Kubernetes中运行的Spark

我已经安装了Kuberenetes（适用于Windows 10的minikube），并使用helm添加了Spark：

.\helm.exe install --name spark-test stable/spark

然后，我使用

.\kubectl.exe expose deployment spark-test-master --port=7070 --name=spark-master-ext --type=NodePort

例如，我的UI在上运行，spark master暴露于：32473。为了检查，我执行以下操作：

.\minikube-windows-amd64.exe service spark-master-ext

但当我在Java中这样做时：

SparkConf conf = new SparkConf().setMaster("spark://192.168.1.168:32473").setAppName("Data Extractor");

我有：

18/03/19 13:57:29 WARN AppClient$ClientEndpoint: Could not connect to 192.168.1.168:32473: akka.remote.EndpointAssociationException: Association failed with [akka.tcp://sparkMaster@192.168.1.168:32473]
18/03/19 13:57:29 WARN ReliableDeliverySupervisor: Association with remote system [akka.tcp://sparkMaster@192.168.1.168:32473] has failed, address is now gated for [5000] ms. Reason: [Association failed with [akka.tcp://sparkMaster@192.168.1.168:32473]] Caused by: [Connection refused: no further information: /192.168.1.168:32473]
18/03/19 13:57:29 WARN AppClient$ClientEndpoint: Failed to connect to master 192.168.1.168:32473
akka.actor.ActorNotFound: Actor not found for: ActorSelection[Anchor(akka.tcp://sparkMaster@192.168.1.168:32473/), Path(/user/Master)]

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有什么想法吗？如何在Minikube中运行Spark上运行Java Spark作业？

Spark的Helm chart看起来真的过时了（1.5.1），所以我在本地安装了2.3.0，它运行时没有任何问题。案件结案，对不起：）