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https://issues.apache.org/jira/browse/KAFKA-10376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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BPR updated KAFKA-10376:
------------------------
    Labels: Aggregation Deserialize Key  (was: Deserialize)

> Add end timestamp to Time Window key.  Update TimeWindow 
> Serializer/Deserializer to set end of window.
> ------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-10376
>                 URL: https://issues.apache.org/jira/browse/KAFKA-10376
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>    Affects Versions: 2.6.0
>            Reporter: BPR
>            Priority: Major
>              Labels: Aggregation, Deserialize, Key
>
> Aggregate stream consumers are not currently able to get the end timestamp 
> for Time Windows from the Deserializer.  This is due to the fact that the end 
> timestamp is not present in the message key.  The end timestamp is not 
> currently added to the end of the key for Time Window aggregates.
> Update the code to add the end timestamp long onto the end of the key and 
> update the Deserialized to extract and set the correct end on the Window.
> This issue is peripherally related to KAFKA-4468, KAFKA-9649 and KAFKA-10366.



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