Rest Services are exposed using camel-cxf component. A large request is send setting the 'requestHeaderSize' in Jetty like the below in blueprint,

<httpj:engine-factory bus="cxf">
<httpj:engine port="8123">
<httpj:connector>
<bean class="org.eclipse.jetty.server.nio.SelectChannelConnector">
<property name="port">8123</property>
<property name="requestHeaderSize" value="80000"/>
<property name="requestBufferSize" value="80000"/>
</bean>
</httpj:connector>
</httpj:engine>
</httpj:engine-factory>

However, in the attached reproducer, if we use the CXF version that's shipped with Fuse, i.e 2.7.0.redhat-610379, it produces the below test failure message, on 'mvn test',

org.apache.camel.CamelExecutionException: Exception occurred during execution on the exchange: Exchange[Message: [Body is null]]
at org.apache.camel.component.http.HttpProducer.populateHttpOperationFailedException(HttpProducer.java:228)
at org.apache.camel.component.http.HttpProducer.process(HttpProducer.java:156)
at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
at org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:73)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:378)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:346)
at org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:242)
at org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:346)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:201)
at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:128)
at org.apache.camel.impl.DefaultProducerTemplate.sendBodyAndHeaders(DefaultProducerTemplate.java:251)
at org.apache.camel.impl.DefaultProducerTemplate.requestBodyAndHeaders(DefaultProducerTemplate.java:309)
at org.apache.camel.impl.DefaultProducerTemplate.requestBodyAndHeaders(DefaultProducerTemplate.java:305)
at org.apache.camel.impl.DefaultProducerTemplate.requestBodyAndHeaders(DefaultProducerTemplate.java:342)

If we upgrade to CXF version, 2.7.14, the test case works just fine. The 'requestHeaderSize' is taken into account and the test passes.

I am not sure what are the changes between the CXF versions that make the test to fail while using CXF version shipped with Fuse 6.1.0.

Applying R2 P3 patch does not have any difference.