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

["Bastien DINE (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-8093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17026461#comment-17026461 ] 

Bastien DINE commented on FLINK-8093:
-------------------------------------

[~NicoK] I can handle it if you assign me this Jira

I do agree with the client id based on operator, also maybe we could let the user overwrite it somehow


Does it need to be backported on lower version ? 

> 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
>         Environment: flink 1.3.2, kafka 0.9.1
>            Reporter: dongtingting
>            Priority: Critical
>
> 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 ：
> 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
> 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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