[
https://issues.apache.org/jira/browse/KAFKA-13626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17486916#comment-17486916
]
Daniel Häuser commented on KAFKA-13626:
---------------------------------------
[~Kvicii]
I don't know exactly what happened there. As far as I know, the machine that
ran the Kafka brokers were not able to communicate with each other at that
point of time. Unfortunately I do not have any further access to them, nor the
configuration of the client.
But no matter what caused this issue, I don't think that the Kafka Client
should throw a NullPointerException in any case. The Exception should be
something that the caller can handle accordingly (e.g. IOException on
networking issues so that you can retry). That's why I opened this bug report.
However, I can also understand if this ticket will closed, because it contains
too little information to be able to reproduce the problem.
> NullPointerException in Selector.pollSelectionKeys: channel is null
> -------------------------------------------------------------------
>
> Key: KAFKA-13626
> URL: https://issues.apache.org/jira/browse/KAFKA-13626
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 2.7.1
> Reporter: Daniel Häuser
> Priority: Minor
>
> This NullPointerException occured while we were having networking issues.
> Unfortunately I cannot provide much more information than this stack trace
> because this is all I got from our operations team.
> {code:java}
> java.lang.IllegalStateException: This error handler cannot process
> 'java.lang.NullPointerException's; no record information is available
> at
> org.springframework.kafka.listener.SeekUtils.seekOrRecover(SeekUtils.java:200)
> at
> org.springframework.kafka.listener.SeekToCurrentErrorHandler.handle(SeekToCurrentErrorHandler.java:112)
> at
> org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.handleConsumerException(KafkaMessageListenerContainer.java:1599)
> at
> org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:1210)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at java.base/java.lang.Thread.run(Thread.java:831)
> Caused by: java.lang.NullPointerException: Cannot invoke
> "org.apache.kafka.common.network.KafkaChannel.id()" because "channel" is null
> at
> org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:516)
> at org.apache.kafka.common.network.Selector.poll(Selector.java:481)
> at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:563)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:265)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:236)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:227)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:164)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:257)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:480)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1257)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1226)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1206)
> at jdk.internal.reflect.GeneratedMethodAccessor128.invoke(Unknown
> Source)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:567)
> at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
> at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
> at jdk.proxy2/jdk.proxy2.$Proxy137.poll(Unknown Source)
> at
> org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.doPoll(KafkaMessageListenerContainer.java:1410)
> at
> org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.pollAndInvoke(KafkaMessageListenerContainer.java:1249)
> at
> org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:1161)
> ... 3 common frames omitted {code}
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
