[CAMEL-12076] Camel Kafka producer: Specified topic is ignored ("No topic key set" error) when KafkaConfiguration is used

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.20.1
• Fix Version/s: 2.21.0
• Component/s: camel-kafka
• Estimated Complexity: Unknown
• Assignee: Dmitry Volodin
• Reporter: Igor Lavrentjev
• Created: 11/Dec/17 12:28
• Updated: 14/Dec/17 10:13
• Resolved: 14/Dec/17 10:13

Description

Specified topic is ignored ("No topic key set" error) when KafkaConfiguration is used. When topic is set inside KafkaConfiguration then no error occurs.

<spring-boot.version>1.5.8.RELEASE</spring-boot.version>
<camel.version>2.20.1</camel.version>

        from("direct:sendToKafka")
                .setBody(constant("Message from Camel to Kafka"))
                .setHeader(KafkaConstants.KEY, constant("Camel"))
                .to("kafka:TESTTOPIC?configuration=#kafkaConfiguration");

2017-12-11 14:16:35.466 ERROR 12048 --- [ad #1 - WireTap] CamelRouter                              : Exchange[ExchangePattern: InOnly, BodyType: String, Body: Message from Camel to Kafka, CaughtExceptionType: org.apache.camel.CamelExchangeException, CaughtExcept
ionMessage: No topic key set. Exchange[ID-5CG7383K6H00BA-1512994577303-0-3], StackTrace: org.apache.camel.CamelExchangeException: No topic key set. Exchange[ID-5CG7383K6H00BA-1512994577303-0-3]
        at org.apache.camel.component.kafka.KafkaProducer.createRecorder(KafkaProducer.java:149)
        at org.apache.camel.component.kafka.KafkaProducer.process(KafkaProducer.java:251)
        at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:148)
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548)
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:138)
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:101)
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
        at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:62)
        at org.apache.camel.processor.SendDynamicProcessor$1.doInAsyncProducer(SendDynamicProcessor.java:132)
        at org.apache.camel.impl.ProducerCache.doInAsyncProducer(ProducerCache.java:445)
        at org.apache.camel.processor.SendDynamicProcessor.process(SendDynamicProcessor.java:127)
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548)
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201)
        at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:97)
        at org.apache.camel.processor.WireTapProcessor$1.call(WireTapProcessor.java:158)
        at org.apache.camel.processor.WireTapProcessor$1.call(WireTapProcessor.java:153)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
]

Issue Links

• links to: GitHub Pull Request #2147
• links to: GitHub Pull Request #2147