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https://issues.apache.org/jira/browse/CAMEL-3698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen resolved CAMEL-3698.
--------------------------------
Resolution: Not A Problem
Fix Version/s: 2.7.0
I have added a note on the load balancer wiki page about that you should enable
stream caching if using streams.
> Failover loadbalancing between cxf endpoints results in
> IllegalStateException: Already connected
> ------------------------------------------------------------------------------------------------
>
> Key: CAMEL-3698
> URL: https://issues.apache.org/jira/browse/CAMEL-3698
> Project: Camel
> Issue Type: Bug
> Components: camel-core, camel-cxf
> Affects Versions: 2.6.0
> Reporter: Martijn van Ginkel
> Assignee: Willem Jiang
> Fix For: 2.7.0
>
>
> I have configured a route with a failover loadbalancer using camel 2.6.0 and
> cxf 2.3.2 as follows:
> {code:xml}
> <camelContext id="camelContext" xmlns="http://camel.apache.org/schema/spring";
> trace="true" autoStartup="true">
> <route>
> <from uri="cxf:bean:entryEndpoint" />
> <loadBalance>
> <failover>
> <exception>java.lang.Throwable</exception>
> </failover>
> <to uri="cxf:bean:targetEndpoint1" />
> <to uri="cxf:bean:targetEndpoint2" />
> </loadBalance>
> </route>
> </camelContext>{code}
> We have configured two soap services at a local Tomcat, targetEnpoint1 and 2.
> If 'targetEndpoint1' is stopped (resulting in a 404), I expect the message to
> fail over to 'targetEndpoint2'. When I switch of the service at
> 'targetEndpoint1', executing the route results in a IllegalStateException:
> {code}
> 2011-02-21 16:45:24,430 [ERROR] Logger - Failed delivery for exchangeId:
> ID-MartijnvG-HP-19759-1298303117555-0-2. Exhausted after delivery attempt: 1
> caught: java.lang.IllegalStateException: IllegalStateException invoking
> http://localhost:8080/echo2/echo: Already connected
> java.lang.IllegalStateException: IllegalStateException invoking
> http://localhost:8080/echo2/echo: Already connected
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
> Source)
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.mapException(HTTPConduit.java:2107)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:2097)
> at
> org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:56)
> at org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:697)
> at
> org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
> at
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:255)
> at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:454)
> at
> org.apache.camel.component.cxf.CxfProducer.process(CxfProducer.java:94)
> at
> org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
> at
> org.apache.camel.processor.SendProcessor$2.doInAsyncProducer(SendProcessor.java:104)
> at
> org.apache.camel.impl.ProducerCache.doInAsyncProducer(ProducerCache.java:272)
> at
> org.apache.camel.processor.SendProcessor.process(SendProcessor.java:98)
> at
> org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
> at
> org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)
> at
> org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)
> at
> org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:68)
> at
> org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
> at
> org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)
> at
> org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)
> at
> org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:99)
> at
> org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
> at
> org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:299)
> at
> org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:208)
> at
> org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:269)
> at
> org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:70)
> at
> org.apache.camel.processor.loadbalancer.FailOverLoadBalancer.processExchange(FailOverLoadBalancer.java:226)
> at
> org.apache.camel.processor.loadbalancer.FailOverLoadBalancer.access$300(FailOverLoadBalancer.java:38)
> at
> org.apache.camel.processor.loadbalancer.FailOverLoadBalancer$FailOverAsyncCallback.done(FailOverLoadBalancer.java:286)
> at
> org.apache.camel.processor.DefaultChannel$1.done(DefaultChannel.java:275)
> at
> org.apache.camel.processor.RedeliveryErrorHandler.deliverToFailureProcessor(RedeliveryErrorHandler.java:639)
> at
> org.apache.camel.processor.RedeliveryErrorHandler.processAsyncErrorHandler(RedeliveryErrorHandler.java:368)
> at
> org.apache.camel.processor.RedeliveryErrorHandler$1.done(RedeliveryErrorHandler.java:317)
> at
> org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)
> at
> org.apache.camel.component.cxf.CxfClientCallback.handleException(CxfClientCallback.java:85)
> at
> org.apache.cxf.interceptor.ClientOutFaultObserver.onMessage(ClientOutFaultObserver.java:59)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream$1.run(HTTPConduit.java:2203)
> at
> org.apache.cxf.workqueue.AutomaticWorkQueueImpl$2.run(AutomaticWorkQueueImpl.java:253)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
> Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
> Caused by: java.lang.IllegalStateException: Already connected
> at java.net.HttpURLConnection.setFixedLengthStreamingMode(Unknown
> Source)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.thresholdNotReached(HTTPConduit.java:1937)
> at
> org.apache.cxf.io.AbstractThresholdOutputStream.close(AbstractThresholdOutputStream.java:99)
> at
> org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:2029)
> ... 38 more
> {code}
> The failover does not work. However when I change the loglevel of
> _org.apache.camel.processor.interceptor.Tracer_ from WARN to INFO in my
> log4j.properties, the failover does work as expected. In both cases tracing
> is enabled.
> I believe this is a bug since the behaviour of the failover changes if the
> log level is changed.
> We were able to reproduce this behaviour on multiple systems. If you have any
> problems reproducing this behaviour we are happy to provide more information
> or an example project.
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