Hi, I tried to send 5000 messages to Kafka broker using Jmeter ( 10 thread and 500 messages per a thread,one message size is 105 byes). After 2000 messages I am getting the following exception. Exception shows "Too many open files" error.So I changed to increase no. of open files limit on my machine.
http://askubuntu.com/questions/162229/how-do-i-increase-the-open-files-limit-for-a-non-root-user and changed buffer size (socket.request.max.bytes) value in server.properties file but still I am getting same exception. What is the cause for this issue? [2014-10-03 12:31:07,051] ERROR - Utils$ fetching topic metadata for topics [Set(test1)] from broker [ArrayBuffer(id:0,host:localhost,port:9092)] failed kafka.common.KafkaException: fetching topic metadata for topics [Set(test1)] from broker [ArrayBuffer(id:0,host:localhost,port:9092)] failed at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:67) 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:167) at kafka.utils.Logging$class.swallowError(Logging.scala:106) at kafka.utils.Utils$.swallowError(Utils.scala:46) at kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:78) at kafka.producer.Producer.send(Producer.scala:76) at kafka.javaapi.producer.Producer.send(Producer.scala:33) at org.wso2.carbon.connector.KafkaProduce.send(KafkaProduce.java:71) at org.wso2.carbon.connector.KafkaProduce.connect(KafkaProduce.java:28) at org.wso2.carbon.connector.core.AbstractConnector.mediate(AbstractConnector.java:32) at org.apache.synapse.mediators.ext.ClassMediator.mediate(ClassMediator.java:78) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:77) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:47) at org.apache.synapse.mediators.template.TemplateMediator.mediate(TemplateMediator.java:77) at org.apache.synapse.mediators.template.InvokeMediator.mediate(InvokeMediator.java:129) at org.apache.synapse.mediators.template.InvokeMediator.mediate(InvokeMediator.java:78) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:77) at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:47) at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:131) at org.apache.synapse.core.axis2.ProxyServiceMessageReceiver.receive(ProxyServiceMessageReceiver.java:166) at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180) at org.apache.synapse.transport.passthru.ServerWorker.processNonEntityEnclosingRESTHandler(ServerWorker.java:344) at org.apache.synapse.transport.passthru.ServerWorker.processEntityEnclosingRequest(ServerWorker.java:385) at org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:183) at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Caused by: java.net.SocketException: Too many open files at sun.nio.ch.Net.socket0(Native Method) at sun.nio.ch.Net.socket(Net.java:423) at sun.nio.ch.Net.socket(Net.java:416) at sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:104) at sun.nio.ch.SelectorProviderImpl.openSocketChannel(SelectorProviderImpl.java:60) at java.nio.channels.SocketChannel.open(SocketChannel.java:142) at kafka.network.BlockingChannel.connect(BlockingChannel.scala:48) at kafka.producer.SyncProducer.connect(SyncProducer.scala:141) at kafka.producer.SyncProducer.getOrMakeConnection(SyncProducer.scala:156) at kafka.producer.SyncProducer.kafka$producer$SyncProducer$$doSend(SyncProducer.scala:68) at kafka.producer.SyncProducer.send(SyncProducer.scala:112) at kafka.client.ClientUtils$.fetchTopicMetadata(ClientUtils.scala:53) ... 29 more Thanks, Kathees -- Kathees Software Engineer, email: kath...@wso2.com mobile: +94772596173
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