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https://issues.apache.org/jira/browse/KAFKA-5963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma resolved KAFKA-5963.
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Resolution: Auto Closed
Thanks for the JIRA. Kafka 0.8.x is no longer supported and the issue has most
likely been fixed since then. The Selector code has received a large number of
fixes in the last 2+ years.
> Null Pointer Exception on server
> --------------------------------
>
> Key: KAFKA-5963
> URL: https://issues.apache.org/jira/browse/KAFKA-5963
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.1.1
> Reporter: Mudit Garg
>
> I am using Kafka 0.8.1.1. I am sending the logs to Kafka Streams.
> Initially, everything works fine but after some time when the server is idle
> and no logs are produced, we get *Null Pointer Exception on the server* and
> *nothing gets pushed into Kafka*.
> Following is the stack trace :
> java.lang.NullPointerException
> at org.apache.kafka.common.network.Selector.poll(Selector.java:187)
> at
> org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:154)
> at
> org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:101)
> at java.lang.Thread.run(Thread.java:745)
> I checked the code at
> https://github.com/apache/kafka/blob/0.8.1.1/clients/src/main/java/org/apache/kafka/common/network/Selector.java#L187
> Looks like transmissions object is null.
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