[KAFKA-16863] Consider removing `default.` prefix for exception handler config

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 4.0.0
• Component/s: streams
• Labels: kip
• Assignee: Muralidhar Basani
• Reporter: Matthias J. Sax
• Created: 29/May/24 18:19
• Updated: 08/Sep/24 20:04
• Resolved: 08/Sep/24 03:15

Description

Kafka Streams has a set of configs with `default.` prefix. The intent for the default-prefix is to make a distinction between, well the default, and in-place overwrites in the code. Eg, users can specify ts-extractors on a per-topic basis.

However, for the deserialization- and production-exception handlers, no such overwrites are possible, and thus, `default.` does not really make sense, because there is just one handler overall. Via KIP-1033 we added a new processing-exception handler w/o a default-prefix, too.

Thus, we should consider to deprecate the two existing configs names and add them back w/o the `default.` prefix.

KIP-1056: https://cwiki.apache.org/confluence/display/KAFKA/KIP-1056%3A+Remove+%60default.%60+prefix+for+exception+handler+StreamsConfig 

Issue Links

• links to: GitHub Pull Request #17005