Kafka Stream Changelog topic config

[Michael Kohout]

Hi, sorry for such a simple questions but I don't see any documentation that clearly addresses my question

Is there any documentation on the acceptable config options for that can be passed to Materialized.withLoggingEnabled(final Map<String, String> config) ?

Specifically, is there any way to control the created changelog topic name?

thanks

[Hyun Joon Seol]

If you give a name with `Materialized.as($NAME)`, the changelog topic will take that name.

Available log configs are here: https://github.com/apache/kafka/blob/1.0/core/src/main/scala/kafka/log/LogConfig.scala#L61

[Michael Kohout]

Hmm, I don't seem to be getting that exact result-

from this definition:

KTable<String, String> t = builder.table("topicName", Consumed.with(Serdes.String(), Serdes.String()).withOffsetResetPolicy(Topology.AutoOffsetReset.EARLIEST), Materialized.as("topicStore"))

I'm getting a topic named

${application id}-topicStore-changelog

Am I missing something?

By the way this is for kafka-streams v1.0

thanks again.

[Matthias J. Sax]

Your observation is correct. And you cannot specify an arbitrary topic
name. This would break `bin/kafka-streams-application-reset` that relies
on the current naming schema for internal topics.


-Matthias

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[Michael Kohout]

Ok.  Thanks for your answer.

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