1. Kafka
  2. KAFKA-1041

Number of file handles increases indefinitely in producer if broker host is unresolvable


    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.8.0
    • Fix Version/s:
    • Component/s: producer
    • Labels:
    • Environment:


      We found a issue that if broker host is un resolvable, the number of file handle keep increasing for every message we produce and eventually it uses up all available files handles in operating system. If broker itself is not running and broker host name is resolvable, open file handles count stays flat.

      lsof output shows number of these open file handles continue to grow for every message we produce.

      java 19631 relango 81u sock 0,6 0t0 196966526 can't identify protocol

      I can easily reproduce this with console producer, If I run console producer with right hostname and if broker is not running, the console producer will exit after three tries. But If I run console producer with unresolvable broker, it throws below exception and continues to wait for user input, every time I enter new message, it opens socket and file handle count keeps increasing..

      Here is Exception in producer

      ERROR fetching topic metadata for topics [Set(test-1378245487417)] from broker [ArrayBuffer(id:0,host:localhost1,port:6667)] failed (kafka.utils.Utils$)
      kafka.common.KafkaException: fetching topic metadata for topics [Set(test-1378245487417)] from broker [ArrayBuffer(id:0,host:localhost1,port:6667)] failed
      at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:51)
      at kafka.producer.BrokerPartitionInfo.updateInfo(BrokerPartitionInfo.scala:82)
      at kafka.producer.async.DefaultEventHandler$$anonfun$handle$2.apply$mcV$sp(DefaultEventHandler.scala:79)
      at kafka.utils.Utils$.swallow(Utils.scala:186)
      at kafka.utils.Logging$class.swallowError(Logging.scala:105)
      at kafka.utils.Utils$.swallowError(Utils.scala:45)
      at kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:79)
      at kafka.producer.async.ProducerSendThread.tryToHandle(ProducerSendThread.scala:104)
      at kafka.producer.async.ProducerSendThread$$anonfun$processEvents$3.apply(ProducerSendThread.scala:87)
      at kafka.producer.async.ProducerSendThread$$anonfun$processEvents$3.apply(ProducerSendThread.scala:67)
      at scala.collection.immutable.Stream.foreach(Stream.scala:526)
      at kafka.producer.async.ProducerSendThread.processEvents(ProducerSendThread.scala:66)
      at kafka.producer.async.ProducerSendThread.run(ProducerSendThread.scala:44)
      Caused by: java.nio.channels.UnresolvedAddressException
      at sun.nio.ch.Net.checkAddress(Net.java:30)
      at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:487)
      at kafka.network.BlockingChannel.connect(BlockingChannel.scala:59)
      at kafka.producer.SyncProducer.connect(SyncProducer.scala:151)
      at kafka.producer.SyncProducer.getOrMakeConnection(SyncProducer.scala:166)
      at kafka.producer.SyncProducer.kafka$producer$SyncProducer$$doSend(SyncProducer.scala:73)
      at kafka.producer.SyncProducer.send(SyncProducer.scala:117)
      at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:37)
      ... 12 more

        Issue Links


          Tony Stevenson made changes -
          Workflow Apache Kafka Workflow [ 13052256 ] no-reopen-closed, patch-avail [ 13054375 ]
          Tony Stevenson made changes -
          Workflow no-reopen-closed, patch-avail [ 12814003 ] Apache Kafka Workflow [ 13052256 ]
          Chris Riccomini made changes -
          Link This issue is required by SAMZA-101 [ SAMZA-101 ]
          Neha Narkhede made changes -
          Status Resolved [ 5 ] Closed [ 6 ]
          Jun Rao made changes -
          Status Patch Available [ 10002 ] Resolved [ 5 ]
          Assignee Neha Narkhede [ nehanarkhede ] Rajasekar Elango [ erajasekar ]
          Resolution Fixed [ 1 ]
          Anish Khanzode made changes -
          Attachment KAFKA-1041-patch.diff [ 12631759 ]
          Anish Khanzode made changes -
          Attachment KAFKA-1041-patch.diff [ 12631545 ]
          Anish Khanzode made changes -
          Attachment KAFKA-1041-patch.diff [ 12631545 ]
          Anish Khanzode made changes -
          Status Open [ 1 ] Patch Available [ 10002 ]
          Neha Narkhede made changes -
          Labels features features newbie
          Neha Narkhede made changes -
          Fix Version/s 0.8.2 [ 12326167 ]
          Fix Version/s 0.8.1 [ 12322960 ]
          Jun Rao made changes -
          Fix Version/s 0.8.1 [ 12322960 ]
          Neha Narkhede made changes -
          Field Original Value New Value
          Assignee Jun Rao [ junrao ] Neha Narkhede [ nehanarkhede ]
          Rajasekar Elango created issue -


            • Assignee:
              Rajasekar Elango
              Rajasekar Elango
            • Votes:
              2 Vote for this issue
              7 Start watching this issue


              • Created: