Claus Ibsen created CAMEL-23927:
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Summary: Camel Kafka: metadataMaxAgeMs @UriParam label should be
"common" instead of "producer"
Key: CAMEL-23927
URL: https://issues.apache.org/jira/browse/CAMEL-23927
Project: Camel
Issue Type: Bug
Components: camel-kafka
Reporter: Claus Ibsen
The {{metadataMaxAgeMs}} property in {{KafkaConfiguration.java}} is annotated
with {{@UriParam(label = "producer")}}, but the property is applied to both
consumer and producer Kafka client properties.
In {{createProducerProperties()}}:
{code:java}
addPropertyIfNotEmpty(props, ProducerConfig.METADATA_MAX_AGE_CONFIG,
getMetadataMaxAgeMs());
{code}
In {{createConsumerProperties()}}:
{code:java}
addPropertyIfNotEmpty(props, ConsumerConfig.METADATA_MAX_AGE_CONFIG,
getMetadataMaxAgeMs());
{code}
The native Kafka client defines {{metadata.max.age.ms}} as a common client
config valid for both consumers and producers. Camel correctly passes it to
both, but the {{@UriParam}} label causes the documentation and tooling to
categorize it as producer-only, which is misleading.
Integration tests already use this property on consumer endpoints (e.g.,
{{KafkaConsumerTopicIsPatternIT}}, {{KafkaBreakOnFirstErrorSeekIssueIT}}),
confirming the consumer usage is intentional.
The fix is to change the annotation from {{label = "producer"}} to {{label =
"common"}}.
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