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From "Ismael Juma (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (KAFKA-7565) NPE in KafkaConsumer
Date Tue, 20 Nov 2018 14:58:01 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-7565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ismael Juma reopened KAFKA-7565:
--------------------------------

> 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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