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Posted to dev@kafka.apache.org by "Maarten (JIRA)" <ji...@apache.org> on 2019/04/25 07:39:00 UTC

[jira] [Created] (KAFKA-8288) KStream.through consumer does not use custom TimestampExtractor

Maarten created KAFKA-8288:
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             Summary: KStream.through consumer does not use custom TimestampExtractor
                 Key: KAFKA-8288
                 URL: https://issues.apache.org/jira/browse/KAFKA-8288
             Project: Kafka
          Issue Type: Bug
          Components: streams
    Affects Versions: 2.2.0
            Reporter: Maarten


The Kafka consumer created by {{KStream.through}} does not seem to be using the custom TimestampExtractor set in Kafka Streams properties.

The documentation of {{through}} states the following

{code:java}
...
This is equivalent to calling to(someTopic, Produced.with(keySerde, valueSerde) and StreamsBuilder#stream(someTopicName, Consumed.with(keySerde, valueSerde)).
{code}

However when I use the pattern above, the custom TimestampExtractor _is_ called.

I have verified that the streams app is reading from the specified topic and that the timestamp extractor is called for other topics.



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