Hi all
I have a kafka consumer that looks as the following:
import akka.actor.ActorSystem
import akka.kafka.scaladsl.Consumer
import akka.kafka.{ConsumerSettings, Subscriptions}
import akka.stream.ActorMaterializer
import akka.stream.scaladsl.Sink
import org.apache.kafka.clients.consumer.ConsumerConfig
import org.apache.kafka.common.serialization.StringDeserializer
import scala.util.{Failure, Success}
object App {
def main(args: Array[String]): Unit = {
implicit val system = ActorSystem("SAP-SENDER")
implicit val executor = system.dispatcher
implicit val materilizer = ActorMaterializer()
val config = system.settings.config.getConfig("akka.kafka.consumer")
val consumerSettings: ConsumerSettings[String, String] =
ConsumerSettings(config, new StringDeserializer, new StringDeserializer)
.withBootstrapServers("localhost:9003")
.withGroupId("SAPSENDER")
.withProperty(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest")
Consumer
.plainSource(
consumerSettings,
Subscriptions.topics("TEST-TOPIC")
)
.runWith(Sink.foreach(println))
.onComplete{
case Success(_) => println("Goood")
case Failure(ex) =>
println(s"I am failed ==============> ${ex.getMessage}")
system.terminate()
}
}
}
The kafka server is not active and I would like just to terminate the consumer. It always tries to connect and shows the following messages:
19:03:47.342 [SAP-SENDER-akka.kafka.default-dispatcher-15] DEBUG org.apache.kafka.clients.consumer.KafkaConsumer - [Consumer clientId=consumer-1, groupId=SAPSENDER] Pausing partitions []
19:03:47.342 [SAP-SENDER-akka.kafka.default-dispatcher-15] DEBUG org.apache.kafka.clients.consumer.internals.AbstractCoordinator - [Consumer clientId=consumer-1, groupId=SAPSENDER] No broker available to send FindCoordinator request
19:03:47.342 [SAP-SENDER-akka.kafka.default-dispatcher-15] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer clientId=consumer-1, groupId=SAPSENDER] Give up sending metadata request since no node is available
19:03:47.342 [SAP-SENDER-akka.kafka.default-dispatcher-15] DEBUG org.apache.kafka.clients.consumer.internals.AbstractCoordinator - [Consumer clientId=consumer-1, groupId=SAPSENDER] Coordinator discovery failed, refreshing metadata
19:03:47.342 [SAP-SENDER-akka.kafka.default-dispatcher-15] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer clientId=consumer-1, groupId=SAPSENDER] Give up sending metadata request since no node is available
19:03:47.412 [SAP-SENDER-akka.kafka.default-dispatcher-17] DEBUG org.apache.kafka.clients.consumer.KafkaConsumer - [Consumer clientId=consumer-1, groupId=SAPSENDER] Pausing partitions []
19:03:47.412 [SAP-SENDER-akka.kafka.default-dispatcher-17] DEBUG org.apache.kafka.clients.consumer.internals.AbstractCoordinator - [Consumer clientId=consumer-1, groupId=SAPSENDER] No broker available to send FindCoordinator request
19:03:47.412 [SAP-SENDER-akka.kafka.default-dispatcher-17] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer clientId=consumer-1, groupId=SAPSENDER] Give up sending metadata request since no node is available
19:03:47.412 [SAP-SENDER-akka.kafka.default-dispatcher-17] DEBUG org.apache.kafka.clients.consumer.internals.AbstractCoordinator - [Consumer clientId=consumer-1, groupId=SAPSENDER] Coordinator discovery failed, refreshing metadata
19:03:47.412 [SAP-SENDER-akka.kafka.default-dispatcher-17] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer clientId=consumer-1, groupId=SAPSENDER] Give up sending metadata request since no node is available
19:03:47.478 [SAP-SENDER-akka.kafka.default-dispatcher-20] DEBUG org.apache.kafka.clients.consumer.KafkaConsumer - [Consumer clientId=consumer-1, groupId=SAPSENDER] Pausing partitions []
it also says:
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.kafka.common.network.PlaintextTransportLayer.finishConnect(PlaintextTransportLayer.java:50)
at org.apache.kafka.common.network.KafkaChannel.finishConnect(KafkaChannel.java:173)
at org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:515)
at org.apache.kafka.common.network.Selector.poll(Selector.java:467)
at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:535)
at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:265)
at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:236)
at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:215)
at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:231)
at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:316)
at org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1214)
at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1179)
at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1164)
at akka.kafka.internal.KafkaConsumerActor.poll(KafkaConsumerActor.scala:380)
at akka.kafka.internal.KafkaConsumerActor.akka$kafka$internal$KafkaConsumerActor$$receivePoll(KafkaConsumerActor.scala:360)
at akka.kafka.internal.KafkaConsumerActor$$anonfun$receive$1.applyOrElse(KafkaConsumerActor.scala:221)
at akka.actor.Actor.aroundReceive(Actor.scala:539)
at akka.actor.Actor.aroundReceive$(Actor.scala:537)
at akka.kafka.internal.KafkaConsumerActor.akka$actor$Timers$$super$aroundReceive(KafkaConsumerActor.scala:142)
at akka.actor.Timers.aroundReceive(Timers.scala:51)
at akka.actor.Timers.aroundReceive$(Timers.scala:40)
at akka.kafka.internal.KafkaConsumerActor.aroundReceive(KafkaConsumerActor.scala:142)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:610)
at akka.actor.ActorCell.invoke(ActorCell.scala:579)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:268)
at akka.dispatch.Mailbox.run(Mailbox.scala:229)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
How to catch up the ConnectException in the stream and stop consumer from trying to connect kafka.
The code is hosted here https://gitlab.com/akka-samples/kafkaconsumer.
Thanks a lot