On Tue, 2012-08-07 at 10:52 -0700, Harold Rosenberg wrote: > I am using the AsyncClient (4.0-beta1) as part of an HTTP workload driver, > along with HttpCore 4.2.1 and HttpClient 4.2.1. My primary entry-point is > through calls to > execute(HttpUriRequest<eclipse-javadoc:%E2%98%82=rain-workload-toolkit/%5C/Users%5C/Hal%5C/.m2%5C/repository%5C/org%5C/apache%5C/httpcomponents%5C/httpasyncclient%5C/4.0-beta1%5C/httpasyncclient-4.0-beta1.jar%3Corg.apache.http.nio.client(HttpAsyncClient.class%E2%98%83HttpAsyncClient~execute~Lorg.apache.http.client.methods.HttpUriRequest;~Lorg.apache.http.protocol.HttpContext;~Lorg.apache.http.concurrent.FutureCallback%5C%3CLorg.apache.http.HttpResponse;%3E;%E2%98%82HttpUriRequest> > > request,HttpContext<eclipse-javadoc:%E2%98%82=rain-workload-toolkit/%5C/Users%5C/Hal%5C/.m2%5C/repository%5C/org%5C/apache%5C/httpcomponents%5C/httpasyncclient%5C/4.0-beta1%5C/httpasyncclient-4.0-beta1.jar%3Corg.apache.http.nio.client(HttpAsyncClient.class%E2%98%83HttpAsyncClient~execute~Lorg.apache.http.client.methods.HttpUriRequest;~Lorg.apache.http.protocol.HttpContext;~Lorg.apache.http.concurrent.FutureCallback%5C%3CLorg.apache.http.HttpResponse;%3E;%E2%98%82HttpContext> > context, > FutureCallback<eclipse-javadoc:%E2%98%82=rain-workload-toolkit/%5C/Users%5C/Hal%5C/.m2%5C/repository%5C/org%5C/apache%5C/httpcomponents%5C/httpasyncclient%5C/4.0-beta1%5C/httpasyncclient-4.0-beta1.jar%3Corg.apache.http.nio.client(HttpAsyncClient.class%E2%98%83HttpAsyncClient~execute~Lorg.apache.http.client.methods.HttpUriRequest;~Lorg.apache.http.protocol.HttpContext;~Lorg.apache.http.concurrent.FutureCallback%5C%3CLorg.apache.http.HttpResponse;%3E;%E2%98%82FutureCallback><HttpResponse<eclipse-javadoc:%E2%98%82=rain-workload-toolkit/%5C/Users%5C/Hal%5C/.m2%5C/repository%5C/org%5C/apache%5C/httpcomponents%5C/httpasyncclient%5C/4.0-beta1%5C/httpasyncclient-4.0-beta1.jar%3Corg.apache.http.nio.client(HttpAsyncClient.class%E2%98%83HttpAsyncClient~execute~Lorg.apache.http.client.methods.HttpUriRequest;~Lorg.apache.http.protocol.HttpContext;~Lorg.apache.http.concurrent.FutureCallback%5C%3CLorg.apache.http.HttpResponse;%3E;%E2%98%82HttpResponse>> > callback) on a DefaultHttpAsyncClient. I am sporadically getting the > following exception: > > 12/08/06 08:31:21 ERROR protocol.HttpAsyncRequestExecutor: > http-outgoing-143466 [ACTIVE] HTTP protocol exception: > org.apache.http.impl.nio.conn.DefaultClientAsyncConnection cannot be cast to > org.apache.http.conn.HttpRoutedConnection > java.lang.ClassCastException: > org.apache.http.impl.nio.conn.DefaultClientAsyncConnection cannot be cast to > org.apache.http.conn.HttpRoutedConnection > at > org.apache.http.client.protocol.RequestAddCookies.process(RequestAddCookies.java:123) > at > org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttpProcessor.java:109) > at > org.apache.http.nio.protocol.HttpAsyncRequestExecutor.requestReady(HttpAsyncRequestExecutor.java:157) > at > org.apache.http.impl.nio.client.LoggingAsyncRequestExecutor.requestReady(LoggingAsyncRequestExecutor.java:89) > at > org.apache.http.impl.nio.DefaultNHttpClientConnection.produceOutput(DefaultNHttpClientConnection.java:225) > at > org.apache.http.impl.nio.DefaultHttpClientIODispatch.onOutputReady(DefaultHttpClientIODispatch.java:130) > at > org.apache.http.impl.nio.DefaultHttpClientIODispatch.onOutputReady(DefaultHttpClientIODispatch.java:50) > at > org.apache.http.impl.nio.reactor.AbstractIODispatch.outputReady(AbstractIODispatch.java:141) > at > org.apache.http.impl.nio.reactor.BaseIOReactor.writable(BaseIOReactor.java:181) > at > org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:346) > at > org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:320) > at > org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:280) > at > org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:106) > at > org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:601) > at java.lang.Thread.run(Thread.java:662) > > This shows up in my code as a call to failed(Exception) in my FutureCallback. > > This only occurs very rarely (e.g. 7 such exceptions during a run with 1.4 > million calls to execute), and I can handle the exception and retry the > operation, but I find it very puzzling. Using a debugger, I have looked at > the state of the application on both successful and unsuccessful calls > through this code path, and I can't see any difference. > > Does anyone have any ideas about what might be causing this? I have tried > with both JDK 1.6.0_33 and 1.7.0_5 and get the same exception on both. > > Thanks, > > Hal >
Hi Hal This looks like a bug in HttpAsyncClient. Please raise a JIRA for this defect. It is a shame this report did not come a little earlier. We just released 4.0-beta2. Oleg --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
