Hi,
What's the version of Spark? You're using Kafka 0.9.0.1, ain't you? What's
the topic name?
Jacek
On 7 Jun 2016 11:06 a.m., "Dominik Safaric" <dominiksafa...@gmail.com>
wrote:
> As I am trying to integrate Kafka into Spark, the following exception
> occurs:
>
> org.apache.spark.SparkException: java.nio.channels.ClosedChannelException
> org.apache.spark.SparkException: Couldn't find leader offsets for
> Set([*<topicName>*,0])
> at
>
> org.apache.spark.streaming.kafka.KafkaCluster$$anonfun$checkErrors$1.apply(KafkaCluster.scala:366)
> at
>
> org.apache.spark.streaming.kafka.KafkaCluster$$anonfun$checkErrors$1.apply(KafkaCluster.scala:366)
> at scala.util.Either.fold(Either.scala:97)
> at
>
> org.apache.spark.streaming.kafka.KafkaCluster$.checkErrors(KafkaCluster.scala:365)
> at
>
> org.apache.spark.streaming.kafka.KafkaUtils$.getFromOffsets(KafkaUtils.scala:222)
> at
>
> org.apache.spark.streaming.kafka.KafkaUtils$.createDirectStream(KafkaUtils.scala:484)
> at org.mediasoft.spark.Driver$.main(Driver.scala:42)
> at .<init>(<console>:11)
> at .<clinit>(<console>)
> at .<init>(<console>:7)
> at .<clinit>(<console>)
> at $print(<console>)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:483)
> at
> scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:734)
> at
> scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:983)
> at
> scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:573)
> at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:604)
> at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:568)
> at
> scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:760)
> at
> scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:805)
> at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:717)
> at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:581)
> at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:588)
> at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:591)
> at
>
> scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:882)
> at
> scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
> at
> scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
> at
>
> scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
> at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:837)
> at scala.tools.nsc.interpreter.ILoop.main(ILoop.scala:904)
> at
>
> org.jetbrains.plugins.scala.compiler.rt.ConsoleRunner.main(ConsoleRunner.java:64)
> 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:483)
> at
> com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
>
> As for the Spark configuration:
>
> val conf: SparkConf = new
> SparkConf().setAppName("AppName").setMaster("local[2]")
>
> val confParams: Map[String, String] = Map(
> "metadata.broker.list" -> "<IP_ADDRESS>:9092",
> "auto.offset.reset" -> "largest"
> )
>
> val topics: Set[String] = Set("<topic_name>")
>
> val context: StreamingContext = new StreamingContext(conf, Seconds(1))
> val kafkaStream = KafkaUtils.createDirectStream(context,confParams,
> topics)
>
> kafkaStream.foreachRDD(rdd => {
> rdd.collect().foreach(println)
> })
>
> context.awaitTermination()
> context.start()
>
> The Kafka topic does exist, Kafka server is up and running and I am able to
> produce messages to that particular topic using the Confluent REST API.
>
> What might the problem actually be?
>
>
>
>
> --
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