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https://issues.apache.org/jira/browse/KAFKA-7565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16693299#comment-16693299
]
Alexey Vakhrenev commented on KAFKA-7565:
-----------------------------------------
Whoops, seems like that was too early. Here is the new stacktrace from 2.0.1:
{code:java}
java.lang.NullPointerException
at
org.apache.kafka.clients.consumer.internals.Fetcher$1.onSuccess(Fetcher.java:239)
at
org.apache.kafka.clients.consumer.internals.Fetcher$1.onSuccess(Fetcher.java:219)
at
org.apache.kafka.clients.consumer.internals.RequestFuture.fireSuccess(RequestFuture.java:167)
at
org.apache.kafka.clients.consumer.internals.RequestFuture.complete(RequestFuture.java:127)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient$RequestFutureCompletionHandler.fireCompletion(ConsumerNetworkClient.java:586)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.firePendingCompletedRequests(ConsumerNetworkClient.java:400)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:253)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.pollNoWakeup(ConsumerNetworkClient.java:310)
at
org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1197)
at
org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1154)
{code}
> NPE in KafkaConsumer
> --------------------
>
> Key: KAFKA-7565
> URL: https://issues.apache.org/jira/browse/KAFKA-7565
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 1.1.1
> Reporter: Alexey Vakhrenev
> Priority: Critical
>
> The stacktrace is
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.kafka.clients.consumer.internals.Fetcher$1.onSuccess(Fetcher.java:221)
> at
> org.apache.kafka.clients.consumer.internals.Fetcher$1.onSuccess(Fetcher.java:202)
> at
> org.apache.kafka.clients.consumer.internals.RequestFuture.fireSuccess(RequestFuture.java:167)
> at
> org.apache.kafka.clients.consumer.internals.RequestFuture.complete(RequestFuture.java:127)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient$RequestFutureCompletionHandler.fireCompletion(ConsumerNetworkClient.java:563)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.firePendingCompletedRequests(ConsumerNetworkClient.java:390)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:244)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:233)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1171)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1115)
> {noformat}
> Couldn't find minimal reproducer, but it happens quite often in our system.
> We use {{pause()}} and {{wakeup()}} methods quite extensively, maybe it is
> somehow related.
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