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Posted to dev@kafka.apache.org by "Kyle Winkelman (JIRA)" <ji...@apache.org> on 2017/05/09 18:24:05 UTC

[jira] [Created] (KAFKA-5205) CachingSessionStore doesn't use the default keySerde.

Kyle Winkelman created KAFKA-5205:
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             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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