如题，详细报错信息如下：

20/03/05 11:20:06 ERROR ApplicationMaster: User class threw exception: java.lang.NoClassDefFoundError: org/apache/kafka/clients/consumer/Consumer
java.lang.NoClassDefFoundError: org/apache/kafka/clients/consumer/Consumer
    at org.apache.spark.streaming.kafka010.ConsumerStrategies$.Subscribe(ConsumerStrategy.scala:256)
    at com.znv.facecluster.utils.SparkUtils$.getStreamFormKafka(SparkUtils.scala:40)
    at com.znv.facecluster.topic.FaceClusterTopic$.readPicture(FaceClusterTopic.scala:37)
    at com.znv.facecluster.topic.FaceClusterTopic$.process(FaceClusterTopic.scala:28)
    at com.znv.facecluster.entry.RealTimeFaceClusterApp$.main(RealTimeFaceClusterApp.scala:76)
    at com.znv.facecluster.entry.RealTimeFaceClusterApp.main(RealTimeFaceClusterApp.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.spark.deploy.yarn.ApplicationMaster$$anon$4.run(ApplicationMaster.scala:721)
Caused by: java.lang.ClassNotFoundException: org.apache.kafka.clients.consumer.Consumer
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 11 more

经测试，在集群服务器上提交是可以正常运行的，但是在集群外提交就报这个与Kafka相关的错误。

从错误日志看，是找不到Kafka Consumer这个类，但是在集群中提交是正常的，说明在集群中提交程序，spark可能把Kafka Client的jar包也上传了（仅是猜测，待考证），既然如此在集群外提交时把kafka client的jar包一同上传不久ok了，说干就干。把 kafka-clients-0.10.0.1.jar在spark-submit的--jars中增加上，提交运行，结果不如所料，问题被解决了。