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https://issues.apache.org/jira/browse/KAFKA-9559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leah Thomas reassigned KAFKA-9559:
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Assignee: Leah Thomas
> Change the default "default serde" from ByteArraySerde to null
> --------------------------------------------------------------
>
> Key: KAFKA-9559
> URL: https://issues.apache.org/jira/browse/KAFKA-9559
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: A. Sophie Blee-Goldman
> Assignee: Leah Thomas
> Priority: Blocker
> Fix For: 3.0.0
>
>
> The current default "default serde" is not particularly useful, and in almost
> all cases is intended to be overwritten either by setting the config
> explicitly or by specifying serdes directly in the topology. If a user does
> not set the config and misses specifying a serde they will get a runtime
> ClassCastException once they start processing unless they are in fact
> processing only bytes.
> We should change the default default to null, so that an exception will
> instead be thrown immediately on startup if a user failed to specify a serde
> somewhere in their topology and it falls back to the unset default.
>
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