Hi, After finding that support for streaming api in python is not present for kafka brokers version > 0.10 . I was trying to run a kafka example in scala. I used following spark submit command :
/usr/local/spark/bin/spark-submit --jars /home/mahendra/spark- > streaming-kafka-0-10_2.11-2.1.1.jar,/home/mahendra/spark- > streaming-kafka-0-10-assembly_2.11-2.1.1.jar --class > org.apache.spark.examples.streaming.KafkaWordCount > /usr/local/spark/examples/jars/spark-examples_2.11-2.1.1.jar > 10.0.16.96:2181 group_test streams 6 > Basically I'm trying to include jars : spark-streaming-kafka-0-10_2.11-2.1.1.jar, spark-streaming-kafka-0-10-assembly_2.11-2.1.1.jar But it throws this exception : Exception in thread "main" java.lang.NoClassDefFoundError: >> kafka/serializer/StringDecoder > > at org.apache.spark.streaming.kafka.KafkaUtils$. >> createStream(KafkaUtils.scala:66) > > at org.apache.spark.examples.streaming.KafkaWordCount$. >> main(KafkaWordCount.scala:57) > > at org.apache.spark.examples.streaming.KafkaWordCount.main( >> KafkaWordCount.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.SparkSubmit$.org$apache$spark$ >> deploy$SparkSubmit$$runMain(SparkSubmit.scala:743) > > at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:187) > > at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:212) > > at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:126) > > at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) > > Caused by: java.lang.ClassNotFoundException: >> kafka.serializer.StringDecoder > > at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) > > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > > ... 12 more > > Any idea if I have missed some related jars ? Thanks, Mahendra
