Error messages 'schema.registry.url' was supplied but isn't a known config

Hi, I’m using kafka-streams and I’m having this warn message in the logs:

WARN  org.apache.kafka.clients.admin.AdminClientConfig The configuration 'schema.registry.url' was supplied but isn't a known config.
WARN  org.apache.kafka.clients.consumer.ConsumerConfig The configuration 'schema.registry.url' was supplied but isn't a known config.
WARN  org.apache.kafka.clients.producer.ProducerConfig The configuration 'schema.registry.url' was supplied but isn't a known config.
WARN  org.apache.kafka.clients.consumer.ConsumerConfig The configuration 'schema.registry.url' was supplied but isn't a known config.
WARN  org.apache.kafka.clients.consumer.ConsumerConfig The configuration 'admin.retry.backoff.ms' was supplied but isn't a known config.
WARN  org.apache.kafka.clients.consumer.ConsumerConfig The configuration 'admin.retries' was supplied but isn't a known config.

In my configuration YAML I try several configuration types but it keep getting error…

spring:
kafka:
default:
producer:
configuration:
schema.registry.url: “http://localhost:8081
producer:
properties:
schema.registry.url: “http://localhost:8081
properties:
schema.registry.url: “http://localhost:8081

Could you please advice how to solve this error?
Thanks in advance!

Those WARN are spurious. Nothing to worry about. – It’s a know issue (cf [KAFKA-6793] Unnecessary warning log message - ASF JIRA).

Unfortunately, there is no workaround. You can only ignore those WARN logs.

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