[jira] [Commented] (FLINK-8093) flink job fail because of kafka producer create fail of "javax.management.InstanceAlreadyExistsException"

["Nelson Costa (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-8093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17166209#comment-17166209 ] 

Nelson Costa commented on FLINK-8093:
-------------------------------------

Hi all, it's not clear to me if there is a workaround for this issue on version 1.10.1

I have set a unique id on Kafka client id config but still get the several task managers using the same client id.
Any suggestions would be much appreciated.

> flink job fail because of kafka producer create fail of "javax.management.InstanceAlreadyExistsException"
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-8093
>                 URL: https://issues.apache.org/jira/browse/FLINK-8093
>             Project: Flink
>          Issue Type: Bug
>          Components: Connectors / Kafka
>    Affects Versions: 1.3.2, 1.10.0
>         Environment: flink 1.3.2, kafka 0.9.1
>            Reporter: dongtingting
>            Assignee: Bastien DINE
>            Priority: Critical
>              Labels: usability
>
> one taskmanager has multiple taskslot, one task fail because of create kafkaProducer fail，the reason for create kafkaProducer fail is “javax.management.InstanceAlreadyExistsException: kafka.producer:type=producer-metrics,client-id=producer-3”。 the detail trace is ：
> {noformat}
> 2017-11-04 19:41:23,281 INFO  org.apache.flink.runtime.taskmanager.Task                     - Source: Custom Source -> Filter -> Map -> Filter -> Sink: dp_client_**_log (7/80) (99551f3f892232d7df5eb9060fa9940c) switched from RUNNING to FAILED.
> org.apache.kafka.common.KafkaException: Failed to construct kafka producer
>         at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:321)
>         at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:181)
>         at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducerBase.getKafkaProducer(FlinkKafkaProducerBase.java:202)
>         at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducerBase.open(FlinkKafkaProducerBase.java:212)
>         at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36)
>         at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:111)
>         at org.apache.flink.streaming.runtime.tasks.StreamTask.openAllOperators(StreamTask.java:375)
>         at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:252)
>         at org.apache.flink.runtime.taskmanager.Task.run(Task.java:702)
>         at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.kafka.common.KafkaException: Error registering mbean kafka.producer:type=producer-metrics,client-id=producer-3
>         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.Metrics.addMetric(Metrics.java:255)
>         at org.apache.kafka.common.metrics.Metrics.addMetric(Metrics.java:239)
>         at org.apache.kafka.clients.producer.internals.RecordAccumulator.registerMetrics(RecordAccumulator.java:137)
>         at org.apache.kafka.clients.producer.internals.RecordAccumulator.<init>(RecordAccumulator.java:111)
>         at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:261)
>         ... 9 more
> Caused by: javax.management.InstanceAlreadyExistsException: kafka.producer:type=producer-metrics,client-id=producer-3
>         at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
>         at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
>         at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
>         at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
>         at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
>         at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
>         at org.apache.kafka.common.metrics.JmxReporter.reregister(JmxReporter.java:157)
>         ... 16 more
> {noformat}
> I doubt that task in different taskslot of one taskmanager use different classloader， and taskid may be  the same in one process。 So this lead to create kafkaProducer fail in one taskManager。 
> Does anybody encountered the same problem？ 



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