Not sure what’s going on here. The error fires only on occasion with no changes in configuration. Any advice would be very appreciated.
`
2019-03-28 07:30:10.479 INFO 24020 — [tTaskScheduler1] o.a.k.clients.producer.ProducerConfig : ProducerConfig values:
acks = 1
batch.size = 16384
bootstrap.servers = [${KAFKA_URL}:9092]
buffer.memory = 33554432
client.id = b27f1135-1b6c-4b60-a4f0-6427ff3e8f1a
compression.type = none
connections.max.idle.ms = 540000
enable.idempotence = false
interceptor.classes = []
key.serializer = class org.apache.kafka.common.serialization.StringSerializer
linger.ms = 0
max.block.ms = 60000
max.in.flight.requests.per.connection = 5
max.request.size = 1048576
metadata.max.age.ms = 300000
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
partitioner.class = class org.apache.kafka.clients.producer.internals.DefaultPartitioner
receive.buffer.bytes = 32768
reconnect.backoff.max.ms = 1000
reconnect.backoff.ms = 50
request.timeout.ms = 30000
retries = 5
retry.backoff.ms = 100
sasl.client.callback.handler.class = null
sasl.jaas.config = null
sasl.kerberos.kinit.cmd = /usr/bin/kinit
sasl.kerberos.min.time.before.relogin = 60000
sasl.kerberos.service.name = null
sasl.kerberos.ticket.renew.jitter = 0.05
sasl.kerberos.ticket.renew.window.factor = 0.8
sasl.login.callback.handler.class = null
sasl.login.class = null
sasl.login.refresh.buffer.seconds = 300
sasl.login.refresh.min.period.seconds = 60
sasl.login.refresh.window.factor = 0.8
sasl.login.refresh.window.jitter = 0.05
sasl.mechanism = GSSAPI
security.protocol = PLAINTEXT
send.buffer.bytes = 131072
ssl.cipher.suites = null
ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1]
ssl.endpoint.identification.algorithm = https
ssl.key.password = null
ssl.keymanager.algorithm = SunX509
ssl.keystore.location = null
ssl.keystore.password = null
ssl.keystore.type = JKS
ssl.protocol = TLS
ssl.provider = null
ssl.secure.random.implementation = null
ssl.trustmanager.algorithm = PKIX
ssl.truststore.location = null
ssl.truststore.password = null
ssl.truststore.type = JKS
transaction.timeout.ms = 60000
transactional.id = esstx1
value.serializer = class org.apache.kafka.common.serialization.ByteArraySerializer
2019-03-28 07:30:10.480 INFO 24020 — [tTaskScheduler1] o.a.k.clients.producer.KafkaProducer : [Producer clientId=b27f1135-1b6c-4b60-a4f0-6427ff3e8f1a, transactionalId=esstx1] Instantiated a transactional producer.
2019-03-28 07:30:10.480 INFO 24020 — [tTaskScheduler1] o.a.k.clients.producer.KafkaProducer : [Producer clientId=b27f1135-1b6c-4b60-a4f0-6427ff3e8f1a, transactionalId=esstx1] Overriding the default acks to all since idempotence is enabled.
2019-03-28 07:30:10.485 INFO 24020 — [tTaskScheduler1] o.a.kafka.common.utils.AppInfoParser : Kafka version : 2.0.1
2019-03-28 07:30:10.485 INFO 24020 — [tTaskScheduler1] o.a.kafka.common.utils.AppInfoParser : Kafka commitId : fa14705e51bd2ce5
2019-03-28 07:30:10.489 INFO 24020 — [tTaskScheduler2] o.a.c.callbacks.LoggingCallback : Command executed successfully: com.aramark.ess.common.TriggerSyncPointCommand
2019-03-28 07:30:10.496 WARN 24020 — [tTaskScheduler1] o.a.kafka.common.utils.AppInfoParser : Error registering AppInfo mbean
javax.management.InstanceAlreadyExistsException: kafka.producer:type=app-info,id=b27f1135-1b6c-4b60-a4f0-6427ff3e8f1a
at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437) ~[na:1.8.0_162]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898) ~[na:1.8.0_162]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966) ~[na:1.8.0_162]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900) ~[na:1.8.0_162]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324) ~[na:1.8.0_162]
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522) ~[na:1.8.0_162]
at org.apache.kafka.common.utils.AppInfoParser.registerAppInfo(AppInfoParser.java:62) ~[kafka-clients-2.0.1.jar:na]
at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:451) [kafka-clients-2.0.1.jar:na]
at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:272) [kafka-clients-2.0.1.jar:na]
at org.axonframework.extensions.kafka.eventhandling.producer.DefaultProducerFactory.createKafkaProducer(DefaultProducerFactory.java:198) [axon-kafka-4.0-RC2.jar:4.0-RC2]
at org.axonframework.extensions.kafka.eventhandling.producer.DefaultProducerFactory.createTransactionalProducer(DefaultProducerFactory.java:192) [axon-kafka-4.0-RC2.jar:4.0-RC2]
at org.axonframework.extensions.kafka.eventhandling.producer.DefaultProducerFactory.createProducer(DefaultProducerFactory.java:119) [axon-kafka-4.0-RC2.jar:4.0-RC2]
at org.axonframework.extensions.kafka.eventhandling.producer.KafkaPublisher.send(KafkaPublisher.java:148) [axon-kafka-4.0-RC2.jar:4.0-RC2]
at org.axonframework.eventhandling.AbstractEventBus.lambda$prepareCommit$15(AbstractEventBus.java:229) ~[axon-messaging-4.0.jar:4.0]
at java.util.concurrent.CopyOnWriteArrayList.forEach(CopyOnWriteArrayList.java:891) ~[na:1.8.0_162]
at java.util.concurrent.CopyOnWriteArraySet.forEach(CopyOnWriteArraySet.java:404) ~[na:1.8.0_162]
at org.axonframework.eventhandling.AbstractEventBus.prepareCommit(AbstractEventBus.java:229) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.eventsourcing.eventstore.AbstractEventStore.prepareCommit(AbstractEventStore.java:64) ~[axon-eventsourcing-4.0.jar:4.0]
at org.axonframework.eventhandling.AbstractEventBus.doWithEvents(AbstractEventBus.java:218) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.eventhandling.AbstractEventBus.lambda$null$8(AbstractEventBus.java:152) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.messaging.unitofwork.MessageProcessingContext.notifyHandlers(MessageProcessingContext.java:71) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.messaging.unitofwork.DefaultUnitOfWork.notifyHandlers(DefaultUnitOfWork.java:106) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.messaging.unitofwork.AbstractUnitOfWork.changePhase(AbstractUnitOfWork.java:222) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.messaging.unitofwork.AbstractUnitOfWork.commitAsRoot(AbstractUnitOfWork.java:83) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.messaging.unitofwork.AbstractUnitOfWork.commit(AbstractUnitOfWork.java:71) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.messaging.unitofwork.DefaultUnitOfWork.executeWithResult(DefaultUnitOfWork.java:92) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.commandhandling.SimpleCommandBus.handle(SimpleCommandBus.java:176) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.commandhandling.SimpleCommandBus.doDispatch(SimpleCommandBus.java:141) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.commandhandling.SimpleCommandBus.dispatch(SimpleCommandBus.java:110) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.commandhandling.gateway.AbstractCommandGateway.send(AbstractCommandGateway.java:75) ~[axon-messaging-4.0.jar:4.0]
at org.axonframework.commandhandling.gateway.DefaultCommandGateway.send(DefaultCommandGateway.java:78) ~[axon-messaging-4.0.jar:4.0]
at com.aramark.ess.command.domain.SyncScheduler$SyncExecutor.run(SyncScheduler.kt:103) ~[classes/:na]
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:93) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_162]
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) ~[na:1.8.0_162]
at java.util.concurrent.FutureTask.run(FutureTask.java) ~[na:1.8.0_162]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) ~[na:1.8.0_162]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) ~[na:1.8.0_162]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_162]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_162]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_162]
`