Ok, I've made some progress but I'm seeing crashes now.
I can easily populate a set number of messages into a topic. No issues,
and offsets are properly set.
My consume code with 0.11-M1:
count = 0
val consumerSettings = ConsumerSettings(as, new ByteArrayDeserializer,
new StringDeserializer, Set("lowercaseStrings"))
.withBootstrapServers("192.168.99.100:9092")
.withGroupId("group1")
.withProperty(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest")
val graph = RunnableGraph.fromGraph(GraphDSL.create() { implicit
builder: GraphDSL.Builder[akka.NotUsed] =>
import GraphDSL.Implicits._
type In = CommittableMessage[Array[Byte],String]
val src =
Consumer.committableSource(consumerSettings.withClientId("client1"))
val commit = Flow[In].map{ msg => msg.committableOffset.commit() }
val show = Flow[In].map{ i =>
count += 1
if(i.value=="done") println(s"Time ($count):
"+(System.currentTimeMillis() - now))
i
}
src ~> show ~> commit ~> Sink.ignore
ClosedShape
})
now = System.currentTimeMillis()
graph.run()
Ok, timings aside for a moment--I still have concerns there, but let's
focus on the crashing.
I restart Kafka each run so there's no left-over messages/offsets from
previous run.
I'm using a single topic with just one partition for this test.
If I run this for a small number of messages pre-populated, maybe up to
10000, it works.
If I run it with 100,000 I get this error:
[ReactiveKafka-akka.kafka.default-dispatcher-11] ERROR
akka.kafka.internal.CommittableConsumerStage$$anon$1 - Error in poll
java.lang.IllegalArgumentException: requirement failed
at scala.Predef$.require(Predef.scala:207)
at
akka.kafka.internal.ConsumerStageLogic.handleResult$1(ConsumerStage.scala:372)
at akka.kafka.internal.ConsumerStageLogic.poll(ConsumerStage.scala:384)
at
akka.kafka.internal.CommittableConsumerStage$$anon$1.poll(ConsumerStage.scala:145)
at
akka.kafka.internal.CommittableConsumerStage$$anon$1.commitAsync(ConsumerStage.scala:257)
at
akka.kafka.internal.CommittableConsumerStage$$anon$1.akka$kafka$internal$CommittableConsumerStage$$anon$$commitSingleInternal(ConsumerStage.scala:223)
at
akka.kafka.internal.CommittableConsumerStage$$anon$1$$anonfun$6.apply(ConsumerStage.scala:131)
at
akka.kafka.internal.CommittableConsumerStage$$anon$1$$anonfun$6.apply(ConsumerStage.scala:130)
at
akka.stream.impl.fusing.GraphInterpreter.runAsyncInput(GraphInterpreter.scala:569)
at
akka.stream.impl.fusing.GraphInterpreterShell.receive(ActorGraphInterpreter.scala:417)
at
akka.stream.impl.fusing.ActorGraphInterpreter.akka$stream$impl$fusing$ActorGraphInterpreter$$processEvent(ActorGraphInterpreter.scala:593)
at
akka.stream.impl.fusing.ActorGraphInterpreter$$anonfun$receive$1.applyOrElse(ActorGraphInterpreter.scala:604)
at akka.actor.Actor$class.aroundReceive(Actor.scala:482)
at
akka.stream.impl.fusing.ActorGraphInterpreter.aroundReceive(ActorGraphInterpreter.scala:519)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
at akka.actor.ActorCell.invoke(ActorCell.scala:495)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
at akka.dispatch.Mailbox.run(Mailbox.scala:224)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
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