eaugene opened a new pull request, #14287:
URL: https://github.com/apache/kafka/pull/14287

   When using kafka consumer in apache pinot , we did see couple of WARN as we 
are trying to create kafka consumer class with the same name . We currently 
have to use a added suffix to create a new mBean as each new kafka consumer in 
same process creates a mBean . Adding support here to skip creation of mBean if 
its already existing
   
   ```
   javax.management.InstanceAlreadyExistsException: 
kafka.consumer:type=app-info,id=transcript2_REALTIME-transcript-topic-0
   at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:436) ~[?:?]
   at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1855)
 ~[?:?]
   at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:955)
 ~[?:?]
   at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:890)
 ~[?:?]
   at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:320)
 ~[?:?]
   at 
com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) 
~[?:?]
   at 
org.apache.pinot.shaded.org.apache.kafka.common.utils.AppInfoParser.registerAppInfo(AppInfoParser.java:64)
 
[pinot-protobuf-0.13.0-SNAPSHOT-shaded.jar:0.13.0-SNAPSHOT-02fe2f1f864627b4a0e80c1291422b75cd173879]
   at 
org.apache.pinot.shaded.org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:814)
 
[pinot-protobuf-0.13.0-SNAPSHOT-shaded.jar:0.13.0-SNAPSHOT-02fe2f1f864627b4a0e80c1291422b75cd173879]
   at 
org.apache.pinot.shaded.org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:665)
 
[pinot-protobuf-0.13.0-SNAPSHOT-shaded.jar:0.13.0-SNAPSHOT-02fe2f1f864627b4a0e80c1291422b75cd173879]
   at 
org.apache.pinot.shaded.org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:646)
 
[pinot-protobuf-0.13.0-SNAPSHOT-shaded.jar:0.13.0-SNAPSHOT-02fe2f1f864627b4a0e80c1291422b75cd173879]
   at 
org.apache.pinot.shaded.org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:626)
 
[pinot-protobuf-0.13.0-SNAPSHOT-shaded.jar:0.13.0-SNAPSHOT-02fe2f1f864627b4a0e80c1291422b75cd173879]
   at 
org.apache.pinot.plugin.stream.kafka20.KafkaPartitionLevelConnectionHandler.createConsumer(KafkaPartitionLevelConnectionHandler.java:84)
 
[pinot-kafka-2.0-0.13.0-SNAPSHOT-shaded.jar:0.13.0-SNAPSHOT-02fe2f1f864627b4a0e80c1291422b75cd173879]
   ```


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