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From "Ismael Juma (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-3992) InstanceAlreadyExistsException Error for Consumers Starting in Parallel
Date Fri, 21 Jul 2017 14:42:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-3992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ismael Juma updated KAFKA-3992:
-------------------------------
    Fix Version/s: 0.11.1.0

> InstanceAlreadyExistsException Error for Consumers Starting in Parallel
> -----------------------------------------------------------------------
>
>                 Key: KAFKA-3992
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3992
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.9.0.0, 0.10.0.0
>            Reporter: Alexander Cook
>            Assignee: Ewen Cheslack-Postava
>             Fix For: 0.11.1.0
>
>
> I see the following error sometimes when I start multiple consumers at about the same
time in the same process (separate threads). Everything seems to work fine afterwards, so
should this not actually be an ERROR level message, or could there be something going wrong
that I don't see? 
> Let me know if I can provide any more info! 
> Error processing messages: Error registering mbean kafka.consumer:type=consumer-node-metrics,client-id=consumer-1,node-id=node--1
> org.apache.kafka.common.KafkaException: Error registering mbean kafka.consumer:type=consumer-node-metrics,client-id=consumer-1,node-id=node--1
>  
> Caused by: javax.management.InstanceAlreadyExistsException: kafka.consumer:type=consumer-node-metrics,client-id=consumer-1,node-id=node--1
> Here is the full stack trace: 
> M[?:com.ibm.streamsx.messaging.kafka.KafkaConsumerV9.produceTuples:-1]  - Error processing
messages: Error registering mbean kafka.consumer:type=consumer-node-metrics,client-id=consumer-1,node-id=node--1
> org.apache.kafka.common.KafkaException: Error registering mbean kafka.consumer:type=consumer-node-metrics,client-id=consumer-1,node-id=node--1
> 	at org.apache.kafka.common.metrics.JmxReporter.reregister(JmxReporter.java:159)
> 	at org.apache.kafka.common.metrics.JmxReporter.metricChange(JmxReporter.java:77)
> 	at org.apache.kafka.common.metrics.Metrics.registerMetric(Metrics.java:288)
> 	at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:177)
> 	at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:162)
> 	at org.apache.kafka.common.network.Selector$SelectorMetrics.maybeRegisterConnectionMetrics(Selector.java:641)
> 	at org.apache.kafka.common.network.Selector.poll(Selector.java:268)
> 	at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:270)
> 	at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.clientPoll(ConsumerNetworkClient.java:303)
> 	at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:197)
> 	at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:187)
> 	at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:126)
> 	at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorKnown(AbstractCoordinator.java:186)
> 	at org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:857)
> 	at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:829)
> 	at com.ibm.streamsx.messaging.kafka.KafkaConsumerV9.produceTuples(KafkaConsumerV9.java:129)
> 	at com.ibm.streamsx.messaging.kafka.KafkaConsumerV9$1.run(KafkaConsumerV9.java:70)
> 	at java.lang.Thread.run(Thread.java:785)
> 	at com.ibm.streams.operator.internal.runtime.OperatorThreadFactory$2.run(OperatorThreadFactory.java:137)
> Caused by: javax.management.InstanceAlreadyExistsException: kafka.consumer:type=consumer-node-metrics,client-id=consumer-1,node-id=node--1
> 	at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:449)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1910)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:978)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:912)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:336)
> 	at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:534)
> 	at org.apache.kafka.common.metrics.JmxReporter.reregister(JmxReporter.java:157)
> 	... 18 more



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