Unfortunately, even with this Spark configuration and Kafka parameters, the
same exception keeps occurring:
16/06/07 12:26:11 INFO SimpleConsumer: Reconnect due to socket error:
java.nio.channels.ClosedChannelException
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)
If it helps for troubleshooting, here are the logs of the Kafka server:
16-06-07 10:24:58,349] INFO Initiating client connection,
connectString=localhost:2181 sessionTimeout=6000
watcher=org.I0Itec.zkclient.ZkClient@4e05faa7 (org.apache.zookeeper.ZooKeeper)
[2016-06-07 10:24:58,365] INFO Opening socket connection to server
localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown
error) (org.apache.zookeeper.ClientCnxn)
[2016-06-07 10:24:58,365] INFO Waiting for keeper state SyncConnected
(org.I0Itec.zkclient.ZkClient)
[2016-06-07 10:24:58,375] INFO Socket connection established to
localhost/127.0.0.1:2181, initiating session (org.apache.zookeeper.ClientCnxn)
[2016-06-07 10:24:58,405] INFO Session establishment complete on server
localhost/127.0.0.1:2181, sessionid = 0x1552a64a9a80000, negotiated timeout =
6000 (org.apache.zookeeper.ClientCnxn)
[2016-06-07 10:24:58,408] INFO zookeeper state changed (SyncConnected)
(org.I0Itec.zkclient.ZkClient)
[2016-06-07 10:24:58,562] INFO Loading logs. (kafka.log.LogManager)
[2016-06-07 10:24:58,608] INFO Completed load of log <topic_name>-0 with log
end offset 15 (kafka.log.Log)
[2016-06-07 10:24:58,614] INFO Completed load of log _schemas-0 with log end
offset 1 (kafka.log.Log)
[2016-06-07 10:24:58,617] INFO Completed load of log <topic_name>-0 with log
end offset 5 (kafka.log.Log)
[2016-06-07 10:24:58,620] INFO Completed load of log <topic_name>-0 with log
end offset 2 (kafka.log.Log)
[2016-06-07 10:24:58,629] INFO Completed load of log <topic_name>-0 with log
end offset 1759 (kafka.log.Log)
[2016-06-07 10:24:58,635] INFO Logs loading complete. (kafka.log.LogManager)
[2016-06-07 10:24:58,737] INFO Starting log cleanup with a period of 300000 ms.
(kafka.log.LogManager)
[2016-06-07 10:24:58,739] INFO Starting log flusher with a default period of
9223372036854775807 ms. (kafka.log.LogManager)
[2016-06-07 10:24:58,798] INFO Awaiting socket connections on 0.0.0.0:9092.
(kafka.network.Acceptor)
[2016-06-07 10:24:58,809] INFO [Socket Server on Broker 1], Started 1 acceptor
threads (kafka.network.SocketServer)
[2016-06-07 10:24:58,849] INFO [ExpirationReaper-1], Starting
(kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2016-06-07 10:24:58,850] INFO [ExpirationReaper-1], Starting
(kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2016-06-07 10:24:58,953] INFO Creating /controller (is it secure? false)
(kafka.utils.ZKCheckedEphemeral)
[2016-06-07 10:24:58,973] INFO Result of znode creation is: OK
(kafka.utils.ZKCheckedEphemeral)
[2016-06-07 10:24:58,974] INFO 1 successfully elected as leader
(kafka.server.ZookeeperLeaderElector)
[2016-06-07 10:24:59,180] INFO [GroupCoordinator 1]: Starting up.
(kafka.coordinator.GroupCoordinator)
[2016-06-07 10:24:59,191] INFO [ExpirationReaper-1], Starting
(kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2016-06-07 10:24:59,194] INFO New leader is 1
(kafka.server.ZookeeperLeaderElector$LeaderChangeListener)
[2016-06-07 10:24:59,198] INFO [Group Metadata Manager on Broker 1]: Removed 0
expired offsets in 16 milliseconds. (kafka.coordinator.GroupMetadataManager)
[2016-06-07 10:24:59,195] INFO [ExpirationReaper-1], Starting
(kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2016-06-07 10:24:59,195] INFO [GroupCoordinator 1]: Startup complete.
(kafka.coordinator.GroupCoordinator)
[2016-06-07 10:24:59,215] INFO [ThrottledRequestReaper-Produce], Starting
(kafka.server.ClientQuotaManager$ThrottledRequestReaper)
[2016-06-07 10:24:59,217] INFO [ThrottledRequestReaper-Fetch], Starting
(kafka.server.ClientQuotaManager$ThrottledRequestReaper)
[2016-06-07 10:24:59,220] INFO Will not load MX4J, mx4j-tools.jar is not in the
classpath (kafka.utils.Mx4jLoader$)
[2016-06-07 10:24:59,230] INFO Creating /brokers/ids/1 (is it secure? false)
(kafka.utils.ZKCheckedEphemeral)
[2016-06-07 10:24:59,244] INFO Result of znode creation is: OK
(kafka.utils.ZKCheckedEphemeral)
[2016-06-07 10:24:59,245] INFO Registered broker 1 at path /brokers/ids/1 with
addresses: PLAINTEXT -> EndPoint(<public_DNS>,9092,PLAINTEXT)
(kafka.utils.ZkUtils)
[2016-06-07 10:24:59,257] INFO Kafka version : 0.9.0.1
(org.apache.kafka.common.utils.AppInfoParser)
[2016-06-07 10:24:59,257] INFO Kafka commitId : 23c69d62a0cabf06
(org.apache.kafka.common.utils.AppInfoParser)
[2016-06-07 10:24:59,258] INFO [Kafka Server 1], started
(kafka.server.KafkaServer)
[2016-06-07 10:24:59,648] INFO [ReplicaFetcherManager on broker 1] Removed
fetcher for partitions [<topic_name>,0] (kafka.server.ReplicaFetcherManager)
[2016-06-07 10:24:59,682] INFO [ReplicaFetcherManager on broker 1] Removed
fetcher for partitions [<topic_name>,0] (kafka.server.ReplicaFetcherManager)
Whereas Zookeeper produced the following logs:
[2016-06-07 10:24:47,935] INFO Server
environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,935] INFO Server environment:java.io.tmpdir=/tmp
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,935] INFO Server environment:java.compiler=<NA>
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,936] INFO Server environment:os.name=Linux
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,936] INFO Server environment:os.arch=amd64
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,939] INFO Server
environment:os.version=4.4.11-23.53.amzn1.x86_64
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,939] INFO Server environment:user.name=ec2-user
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,939] INFO Server environment:user.home=/home/ec2-user
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,939] INFO Server
environment:user.dir=/home/ec2-user/kafka_2.11-0.9.0.1
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,946] INFO tickTime set to 3000
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,946] INFO minSessionTimeout set to -1
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,946] INFO maxSessionTimeout set to -1
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:47,955] INFO binding to port 0.0.0.0/0.0.0.0:2181
(org.apache.zookeeper.server.NIOServerCnxnFactory)
[2016-06-07 10:24:58,370] INFO Accepted socket connection from /127.0.0.1:41368
(org.apache.zookeeper.server.NIOServerCnxnFactory)
[2016-06-07 10:24:58,384] INFO Client attempting to establish new session at
/127.0.0.1:41368 (org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:58,389] INFO Creating new log file: log.3eb
(org.apache.zookeeper.server.persistence.FileTxnLog)
[2016-06-07 10:24:58,400] INFO Established session 0x1552a64a9a80000 with
negotiated timeout 6000 for client /127.0.0.1:41368
(org.apache.zookeeper.server.ZooKeeperServer)
[2016-06-07 10:24:59,154] INFO Got user-level KeeperException when processing
sessionid:0x1552a64a9a80000 type:delete cxid:0x26 zxid:0x3ee txntype:-1
reqpath:n/a Error Path:/admin/preferred_replica_election Error:KeeperErrorCode
= NoNode for /admin/preferred_replica_election
(org.apache.zookeeper.server.PrepRequestProcessor)
[2016-06-07 10:24:59,231] INFO Got user-level KeeperException when processing
sessionid:0x1552a64a9a80000 type:create cxid:0x2d zxid:0x3ef txntype:-1
reqpath:n/a Error Path:/brokers Error:KeeperErrorCode = NodeExists for /brokers
(org.apache.zookeeper.server.PrepRequestProcessor)
[2016-06-07 10:24:59,232] INFO Got user-level KeeperException when processing
sessionid:0x1552a64a9a80000 type:create cxid:0x2e zxid:0x3f0 txntype:-1
reqpath:n/a Error Path:/brokers/ids Error:KeeperErrorCode = NodeExists for
/brokers/ids (org.apache.zookeeper.server.PrepRequestProcessor)
Interestedly, I am able to both retrieve the messages from the specified topic
using the console Consumer and produce messages using the REST API.
As for Kafka/Zookeeper accessibility, since this is a proof-of-concept, all
connections to the ports have been allowed.
> On 07 Jun 2016, at 12:14, Mich Talebzadeh <mich.talebza...@gmail.com> wrote:
>
> ok that is good
>
> Yours is basically simple streaming with Kafka (publishing topic) and your
> Spark streaming. use the following as blueprint
>
> // Create a local StreamingContext with two working thread and batch interval
> of 2 seconds.
> val sparkConf = new SparkConf().
> setAppName("CEP_streaming").
> setMaster("local[2]").
> set("spark.executor.memory", "4G").
> set("spark.cores.max", "2").
> set("spark.streaming.concurrentJobs", "2").
> set("spark.driver.allowMultipleContexts", "true").
> set("spark.hadoop.validateOutputSpecs", "false")
> val ssc = new StreamingContext(sparkConf, Seconds(2))
> ssc.checkpoint("checkpoint")
> val kafkaParams = Map[String, String]("bootstrap.servers" -> "rhes564:9092",
> "schema.registry.url" -> "http://rhes564:8081 <http://rhes564:8081/>",
> "zookeeper.connect" -> "rhes564:2181", "group.id <http://group.id/>" ->
> "CEP_streaming" )
> val topics = Set("newtopic")
> val dstream = KafkaUtils.createDirectStream[String, String, StringDecoder,
> StringDecoder](ssc, kafkaParams, topics)
> dstream.cache()
>
> val lines = dstream.map(_._2)
> val price = lines.map(_.split(',').view(2)).map(_.toFloat)
> // window length - The duration of the window below that must be multiple of
> batch interval n in = > StreamingContext(sparkConf, Seconds(n))
> val windowLength = 4
> // sliding interval - The interval at which the window operation is performed
> in other words data is collected within this "previous interval'
> val slidingInterval = 2 // keep this the same as batch window for continuous
> streaming. You are aggregating data that you are collecting over the batch
> Window
> val countByValueAndWindow = price.filter(_ >
> 95.0).countByValueAndWindow(Seconds(windowLength), Seconds(slidingInterval))
> countByValueAndWindow.print()
> //
> ssc.start()
> ssc.awaitTermination()
>
> HTH
>
> Dr Mich Talebzadeh
>
> LinkedIn
> https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
>
> <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>
>
> http://talebzadehmich.wordpress.com <http://talebzadehmich.wordpress.com/>
>
>
> On 7 June 2016 at 10:58, Dominik Safaric <dominiksafa...@gmail.com
> <mailto:dominiksafa...@gmail.com>> wrote:
> Dear Mich,
>
> Thank you for the reply.
>
> By running the following command in the command line:
>
> bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic <topic_name>
> --from-beginning
>
> I do indeed retrieve all messages of a topic.
>
> Any indication onto what might cause the issue?
>
> An important note to make, I’m using the default configuration of both Kafka
> and Zookeeper.
>
>> On 07 Jun 2016, at 11:39, Mich Talebzadeh <mich.talebza...@gmail.com
>> <mailto:mich.talebza...@gmail.com>> wrote:
>>
>> I assume you zookeeper is up and running
>>
>> can you confirm that you are getting topics from kafka independently for
>> example on the command line
>>
>> ${KAFKA_HOME}/bin/kafka-console-consumer.sh --zookeeper rhes564:2181
>> --from-beginning --topic newtopic
>>
>>
>>
>>
>>
>> Dr Mich Talebzadeh
>>
>> LinkedIn
>> https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
>>
>> <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>
>>
>> http://talebzadehmich.wordpress.com <http://talebzadehmich.wordpress.com/>
>>
>>
>> On 7 June 2016 at 10:06, Dominik Safaric <dominiksafa...@gmail.com
>> <mailto: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?
>>
>>
>>
>>
>> --
>> View this message in context:
>> http://apache-spark-user-list.1001560.n3.nabble.com/Apache-Spark-Kafka-Integration-org-apache-spark-SparkException-Couldn-t-find-leader-offsets-for-Set-tp27103.html
>>
>> <http://apache-spark-user-list.1001560.n3.nabble.com/Apache-Spark-Kafka-Integration-org-apache-spark-SparkException-Couldn-t-find-leader-offsets-for-Set-tp27103.html>
>> Sent from the Apache Spark User List mailing list archive at Nabble.com
>> <http://nabble.com/>.
>>
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>>
>>
>
>
