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Hi, I am needing to give a custom name to the internal/intermediate topics created in kafka-streams.

However, only the "*repartitioned" topics get renamed, while the "aggregate" ones are not renamed.

It looks as if kafka-streams 2.5.0 does not support Named on reduce?

I configured it but it does not take it..the grouped ones takes the named & see the repartitioned topics with that name but the reduced does not take that name.

I would need in order to be able to demo nicely Azkarra streams when browsing the state stores to query.

Update: Hello kafka community, I understand, the Named argument i used is used to config used to name the processor in the topology, But is there any way I can give a custom, more readable name to an intermediate topic like kstream-aggregate-... ? Thanks

Nicolae Marasoiu
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1 Answers1

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It should be possible to name all processors/stores/topics.

However, it's not always clear how the API works -- in fact, some Named parameters "overlap". It's a know issue and not well documented. We need to fix this at some point.

If you want to name a changelog topic, you can name the corresponding store, via Materialized, and the store name will be reused for the changelog topic.

If you want to name a repartition topic, you can pass a name via the Grouped parameter of groupBy() or groupByKey().

Matthias J. Sax
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