Kyle Winkelman created KAFKA-5205:
-------------------------------------
Summary: CachingSessionStore doesn't use the default keySerde.
Key: KAFKA-5205
URL: https://issues.apache.org/jira/browse/KAFKA-5205
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 0.10.2.0
Reporter: Kyle Winkelman
Assignee: Kyle Winkelman
CachingSessionStore wasn't properly using the default keySerde if no Serde was
supplied. I saw the below error in the logs for one of my test cases.
ERROR stream-thread
[cogroup-integration-test-3-5570fe48-d2a3-4271-80b1-81962295553d-StreamThread-6]
Streams application error during processing:
(org.apache.kafka.streams.processor.internals.StreamThread:335)
java.lang.NullPointerException
at
org.apache.kafka.streams.state.internals.CachingSessionStore.findSessions(CachingSessionStore.java:93)
at
org.apache.kafka.streams.kstream.internals.KStreamSessionWindowAggregate$KStreamSessionWindowAggregateProcessor.process(KStreamSessionWindowAggregate.java:94)
at
org.apache.kafka.streams.processor.internals.ProcessorNode$1.run(ProcessorNode.java:47)
at
org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:187)
at
org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:133)
at
org.apache.kafka.streams.processor.internals.ProcessorContextImpl.forward(ProcessorContextImpl.java:82)
at
org.apache.kafka.streams.processor.internals.SourceNode.process(SourceNode.java:69)
at
org.apache.kafka.streams.processor.internals.StreamTask.process(StreamTask.java:206)
at
org.apache.kafka.streams.processor.internals.StreamThread.processAndPunctuate(StreamThread.java:657)
at
org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:728)
at
org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:327)
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