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Posted to jira@kafka.apache.org by "Matthias J. Sax (Jira)" <ji...@apache.org> on 2019/09/09 17:25:00 UTC

[jira] [Commented] (KAFKA-8871) Allow timestamp manipulation in ValueTransformerWithKey

    [ https://issues.apache.org/jira/browse/KAFKA-8871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16925939#comment-16925939 ] 

Matthias J. Sax commented on KAFKA-8871:
----------------------------------------

Seems to be slightly related to KIP-149 / KIP-159.

> Allow timestamp manipulation in ValueTransformerWithKey
> -------------------------------------------------------
>
>                 Key: KAFKA-8871
>                 URL: https://issues.apache.org/jira/browse/KAFKA-8871
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>            Reporter: Levani Kokhreidze
>            Priority: Minor
>              Labels: needs-kip
>
> h3. Motivation
> When using `KStream#transform` in Kafka Streams DSL to manipulate the timestamp, `KStreamImpl#transform` implementation marks *repartitionRequired* as *true,* which isn't necessarily okay when one may just want to manipulate with timestamp without affecting the key. It would be great if DSL user could manipulate the timestamp in `ValueTransformerWithKey`.



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