Spark streaming from kafka


#1

Hi All,

i’m facing this issue when I listen kafka from spark streaming . Did any one faced this issue and solved , Any help on this ?

Exception in thread “main” java.lang.NoClassDefFoundError: scala/collection/GenTraversableOnce$class
at kafka.utils.Pool.(Pool.scala:28)
at kafka.consumer.FetchRequestAndResponseStatsRegistry$.(FetchRequestAndResponseStats.scala:60)
at kafka.consumer.FetchRequestAndResponseStatsRegistry$.(FetchRequestAndResponseStats.scala)
at kafka.consumer.SimpleConsumer.(SimpleConsumer.scala:39)
at org.apache.spark.streaming.kafka.KafkaCluster.connect(KafkaCluster.scala:52)
at org.apache.spark.streaming.kafka.KafkaCluster$$anonfun$org$apache$spark$streaming$kafka$KafkaCluster$$withBrokers$1.apply(KafkaClust
er.scala:345)
at org.apache.spark.streaming.kafka.KafkaCluster$$anonfun$org$apache$spark$streaming$kafka$KafkaCluster$$withBrokers$1.apply(KafkaClust
er.scala:342)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:35)
at org.apache.spark.streaming.kafka.KafkaCluster.org$apache$spark$streaming$kafka$KafkaCluster$$withBrokers(KafkaCluster.scala:342)
at org.apache.spark.streaming.kafka.KafkaCluster.getPartitionMetadata(KafkaCluster.scala:125)
at org.apache.spark.streaming.kafka.KafkaCluster.getPartitions(KafkaCluster.scala:112)
at org.apache.spark.streaming.kafka.KafkaUtils$.getFromOffsets(KafkaUtils.scala:211)
at org.apache.spark.streaming.kafka.KafkaUtils$.createDirectStream(KafkaUtils.scala:484)
at StreamingDepartmentAnalysis$.main(spark_itver_kafka.scala:16)
at StreamingDepartmentAnalysis.main(spark_itver_kafka.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:729)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:185)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:210)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:124)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.ClassNotFoundException: scala.collection.GenTraversableOnce$class
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 25 more


#2

Hi Durga Sir,
I want to learn to develop streaming applications using Kafka and Scala.
Can you please help me where to learn ? Can you please provide me some material ?

Thanks and Regards,
Sarthak Khore