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Peter Huang 4d4cc7c414 KAFKA-19979: Improve Kafka Streams config files (#22831 )

Adds a config/streams.properties template with sections and comments,
similar to the other properties files shipped with Kafka. Same idea as
KAFKA-19574, which did this for the producer and consumer configs.

Based on #21308 by @mshijin-ksolves, which stalled after review, and
picks up @ezhou413's review comments from there. Changes from that PR:

- Commented out `default.key.serde` / `default.value.serde` (they have
no
  default) and listed valid values instead
- Removed the `<>` around `bootstrap.servers`
- Noted that `commit.interval.ms` defaults to 100 under
`exactly_once_v2`
  (otherwise 30000)
- Used `statestore.cache.max.bytes` instead of the deprecated
  `cache.max.bytes.buffering`
- Listed the valid `topology.optimization` values
- Fixed the serde class name to `Serdes$StringSerde`

Also adds a test that validates the file against StreamsConfig so it
can't drift out of sync.

Reviewers: Evan Zhou <ezhou@confluent.io>, Bill Bejeck
 <bbejeck@apache.org>

2026-10-13 13:17:02 -04:00

broker.properties

KAFKA-19573: Update num.recovery.threads.per.data.dir configs (#20299 )

2025-08-07 14:30:10 +08:00

connect-console-sink.properties

KAFKA-2379: Add basic documentation for Kafka Connect.

2015-11-09 16:29:30 -08:00

connect-console-source.properties

KAFKA-2379: Add basic documentation for Kafka Connect.

2015-11-09 16:29:30 -08:00

connect-distributed.properties

KAFKA-19404: Align Connect plugin.path docs with actual behavior (#22481 )