Zygimantas created KAFKA-9717: --------------------------------- Summary: 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
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} -- This message was sent by Atlassian Jira (v8.3.4#803005)