Alexey Vakhrenev created KAFKA-7565:
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Summary: 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
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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