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KafkaBinderProperties does not override with the KafkaBinderConfigurationProperties

See original GitHub issue

the Kafka Streams Binder topic does not seem to take the overrides provided in application.yml (or application.properties) I have added the property - (default port for Kafka is different) spring.cloud.stream.kafka.streams.binder.brokers: localhost:29092

The KafkaBinderConfiguration seems to read from KafkaBinderConfigurationProperties by initializing a new new KafkaBinderConfigurationProperties() and does not read the binder properties in application.yml

 @Configuration
@ConditionalOnMissingBean({Binder.class})
@Import({KafkaAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class, KafkaBinderHealthIndicatorConfiguration.class})
@EnableConfigurationProperties({KafkaExtendedBindingProperties.class})
public class KafkaBinderConfiguration {
    @Autowired
    private KafkaExtendedBindingProperties kafkaExtendedBindingProperties;
    @Autowired
    private ProducerListener producerListener;
    @Autowired
    private KafkaProperties kafkaProperties;

    public KafkaBinderConfiguration() {
    }

    @Bean
    KafkaBinderConfigurationProperties configurationProperties() {
        return new KafkaBinderConfigurationProperties();
    }

    @Bean
    KafkaTopicProvisioner provisioningProvider(KafkaBinderConfigurationProperties configurationProperties) {
        return new KafkaTopicProvisioner(configurationProperties, this.kafkaProperties);
    }

The KTableBinderConfiguration is doing the right thing with resolved KafkaBinderConfigurationProperties

public class KTableBinderConfiguration {
    @Autowired
    private KafkaProperties kafkaProperties;
    @Autowired
    private KafkaStreamsExtendedBindingProperties kafkaStreamsExtendedBindingProperties;

    public KTableBinderConfiguration() {
    }

    @Bean
    public KafkaTopicProvisioner provisioningProvider(KafkaBinderConfigurationProperties binderConfigurationProperties) {
        return new KafkaTopicProvisioner(binderConfigurationProperties, this.kafkaProperties);
    }

    @Bean
    public KTableBinder kTableBinder(KafkaStreamsBinderConfigurationProperties binderConfigurationProperties, KafkaTopicProvisioner kafkaTopicProvisioner, KafkaStreamsBindingInformationCatalogue KafkaStreamsBindingInformationCatalogue) {
        KTableBinder kStreamBinder = new KTableBinder(binderConfigurationProperties, kafkaTopicProvisioner, KafkaStreamsBindingInformationCatalogue);
        return kStreamBinder;
    }
}

the workaround for the override is to use the Kafka Spring Boot properties. spring.kafka.producer.bootstrap-servers: localhost:29092