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https://issues.apache.org/jira/browse/KAFKA-9717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17059189#comment-17059189
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Zygimantas commented on KAFKA-9717:
-----------------------------------
[~cadonna] yes, EOS enabled.
> KafkaStreams#metrics() method randomly throws NullPointerException
> ------------------------------------------------------------------
>
> Key: KAFKA-9717
> URL: https://issues.apache.org/jira/browse/KAFKA-9717
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.2.0
> Environment: Kubernetes
> Reporter: Zygimantas
> Priority: Major
>
> We have implemented monitoring tool which monitors Kafka Streams application
> and regularly (every 20s) calls KafkaStreams.metrics() method in that
> application. But metrics() method randomly throws NullPointerException. It
> happens almost every time after application startup, but may also happen at
> random points in time after running application for few hours.
> Stacktrace:
> {code:java}
> java.lang.NullPointerException
> at
> org.apache.kafka.streams.processor.internals.StreamThread.producerMetrics(StreamThread.java:1320)
> at org.apache.kafka.streams.KafkaStreams.metrics(KafkaStreams.java:379)
> {code}
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