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https://issues.apache.org/jira/browse/KAFKA-8254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16837350#comment-16837350
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John Roesler commented on KAFKA-8254:
-------------------------------------

FYI, 2.2.1 RC0 vote is in progress. 
(https://lists.apache.org/thread.html/3486798e63ae666fc336ce9009f07c7fdf66a96badc1fed63bcbd2ed@%3Cdev.kafka.apache.org%3E)

Please feel free to test it out, and reply on the vote thread if you have some 
trouble with it.

> Suppress incorrectly passes a null topic to the serdes
> ------------------------------------------------------
>
>                 Key: KAFKA-8254
>                 URL: https://issues.apache.org/jira/browse/KAFKA-8254
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 2.1.0, 2.2.0, 2.1.1
>            Reporter: John Roesler
>            Assignee: John Roesler
>            Priority: Major
>             Fix For: 2.3.0, 2.1.2, 2.2.1
>
>
> For example, in KTableSuppressProcessor, we do:
> {noformat}
> final Bytes serializedKey = Bytes.wrap(keySerde.serializer().serialize(null, 
> key));
> {noformat}
> This violates the contract of Serializer (and Deserializer), and breaks 
> integration with known Serde implementations.



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