Kafka producer fails fetching metadata from broker - scala

Question

I'm hosting Kafka on three separate nodes, each with local Zookeeper instances. When producing to the topic live, I get the below exception. metadata.brokers.list is not set to localhost, but kafka1.domain.com, kafka2.domain.com, kafka3.domain.com. The advertised.host.name is set to the local IP address of the Amazon instances. There are no references to localhost in the Kafka setup.
This is the producer config:
props.put("metadata.broker.list", "kafka1.domain.com:9092,kafka2.domain.com:9092,kafka3.domain.com:9092")
props.put("serializer.class", "kafka.serializer.StringEncoder")
props.put("producer.type", "async")
props.put("batch.num.messages", "1000")
props.put("queue.buffering.max.ms", "20000")
props.put("request.required.acks", "0")
Every producer.send produces the exceptions.
Anyone know what might be wrong?
WARN ClientUtils$: Fetching topic metadata with correlation id 5 for topics [Set(live)] from broker [id:0,host:localhost,port:9092] failed
java.nio.channels.ClosedChannelException
at kafka.network.BlockingChannel.send(BlockingChannel.scala:100)
at kafka.producer.SyncProducer.liftedTree1$1(SyncProducer.scala:73)
at kafka.producer.SyncProducer.kafka$producer$SyncProducer$$doSend(SyncProducer.scala:72)
at kafka.producer.SyncProducer.send(SyncProducer.scala:113)
at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:58)
at kafka.producer.BrokerPartitionInfo.updateInfo(BrokerPartitionInfo.scala:82)
at kafka.producer.BrokerPartitionInfo.getBrokerPartitionInfo(BrokerPartitionInfo.scala:49)
at kafka.producer.async.DefaultEventHandler.kafka$producer$async$DefaultEventHandler$$getPartitionListForTopic(DefaultEventHandler.scala:186)
at kafka.producer.async.DefaultEventHandler$$anonfun$partitionAndCollate$1.apply(DefaultEventHandler.scala:150)
at kafka.producer.async.DefaultEventHandler$$anonfun$partitionAndCollate$1.apply(DefaultEventHandler.scala:149)
at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
at kafka.producer.async.DefaultEventHandler.partitionAndCollate(DefaultEventHandler.scala:149)
at kafka.producer.async.DefaultEventHandler.dispatchSerializedData(DefaultEventHandler.scala:95)
at kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:72)
at kafka.producer.async.ProducerSendThread.tryToHandle(ProducerSendThread.scala:105)
at kafka.producer.async.ProducerSendThread.processEvents(ProducerSendThread.scala:94)
at kafka.producer.async.ProducerSendThread.run(ProducerSendThread.scala:45)
ERROR DefaultEventHandler: Failed to collate messages by topic, partition due to: fetching topic metadata for topics [Set(live)] from broker [ArrayBuffer(id:0,host:localhost,port:9092)] failed
WARN ClientUtils$: Fetching topic metadata with correlation id 6 for topics [Set(live)] from broker [id:0,host:localhost,port:9092] failed
java.nio.channels.ClosedChannelException
at kafka.network.BlockingChannel.send(BlockingChannel.scala:100)
at kafka.producer.SyncProducer.liftedTree1$1(SyncProducer.scala:73)
at kafka.producer.SyncProducer.kafka$producer$SyncProducer$$doSend(SyncProducer.scala:72)
at kafka.producer.SyncProducer.send(SyncProducer.scala:113)
at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:58)
at kafka.producer.BrokerPartitionInfo.updateInfo(BrokerPartitionInfo.scala:82)
at kafka.producer.async.DefaultEventHandler$$anonfun$handle$2.apply$mcV$sp(DefaultEventHandler.scala:78)
at kafka.utils.Utils$.swallow(Utils.scala:172)
at kafka.utils.Logging$class.swallowError(Logging.scala:106)
at kafka.utils.Utils$.swallowError(Utils.scala:45)
at kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:78)
at kafka.producer.async.ProducerSendThread.tryToHandle(ProducerSendThread.scala:105)
at kafka.producer.async.ProducerSendThread.processEvents(ProducerSendThread.scala:94)
at kafka.producer.async.ProducerSendThread.run(ProducerSendThread.scala:45)
ERROR Utils$: fetching topic metadata for topics [Set(live)] from broker [ArrayBuffer(id:0,host:localhost,port:9092)] failed
kafka.common.KafkaException: fetching topic metadata for topics [Set(live)] from broker [ArrayBuffer(id:0,host:localhost,port:9092)] failed
at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:72)
at kafka.producer.BrokerPartitionInfo.updateInfo(BrokerPartitionInfo.scala:82)
at kafka.producer.async.DefaultEventHandler$$anonfun$handle$2.apply$mcV$sp(DefaultEventHandler.scala:78)
at kafka.utils.Utils$.swallow(Utils.scala:172)
at kafka.utils.Logging$class.swallowError(Logging.scala:106)
at kafka.utils.Utils$.swallowError(Utils.scala:45)
at kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:78)
at kafka.producer.async.ProducerSendThread.tryToHandle(ProducerSendThread.scala:105)
at kafka.producer.async.ProducerSendThread.processEvents(ProducerSendThread.scala:94)
at kafka.producer.async.ProducerSendThread.run(ProducerSendThread.scala:45)
Caused by: java.nio.channels.ClosedChannelException
at kafka.network.BlockingChannel.send(BlockingChannel.scala:100)
at kafka.producer.SyncProducer.liftedTree1$1(SyncProducer.scala:73)
at kafka.producer.SyncProducer.kafka$producer$SyncProducer$$doSend(SyncProducer.scala:72)
at kafka.producer.SyncProducer.send(SyncProducer.scala:113)
at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:58)
... 9 more

Answer 1

I was using the kafka.producer.Producer in kafka:0.8.2.1. Apparently it is bugged, and by going for the org.apache.kafka.clients.producer.KafkaProducer in kafka-clients:0.8.2.1 instead, it worked instantly without any problems on the same config.