Hi Jerry, thanks for the reply!
We have this situation when the broker gets terminated while requests are currently being processed. Apparently, those requests neither recover after the broker gets restarted nor time out when UimaAsynchronousEngine.Timeout is reached.
Is this the expected behaviour when a broker is getting terminated unexpectedly?
Thanks and all the best Frank Am 22.04.2014 15:22, schrieb Jaroslaw Cwiklik:
Hi, do you see any evidence in the service log of any problems? The client side will block in sendAndReceive() until a reply comes back from the service. You can attach jconsole to the service to see if it is hung somewhere. Please check UIMA-AS README for instructions how to configure service to enable jmx. Jerry On Tue, Apr 22, 2014 at 4:38 AM, Frank Enders <[email protected]>wrote:Dear all, we are using a synchronous sendAndReceiveCAS() call within a webservice endpoint (JAX WS RI). Doing so, in some cases we find hanging requests, which are not getting completed. I am attaching a corresponding part of a thread dump. We are using UIMA AS 2.4.0. Application environment is Tomcat 6.0.32, JAX WS RI 2.1.7. Have you encountered a similar behaviour? Thank and all the best Frank "catalina-exec-77" Id=3412437 in WAITING cpu=2083520 ms usr=2056580 ms blocked 547742 for -1 ms waited 297560 for -1 ms locks java.util.concurrent.locks.ReentrantLock$NonfairSync@19c88785 at sun.misc.Unsafe.park(Native Method) - waiting on (a java.util.concurrent.Semaphore$NonfairSync@3c3939fc) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156) at java.util.concurrent.locks.AbstractQueuedSynchronizer. parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811) at java.util.concurrent.locks.AbstractQueuedSynchronizer. doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:969) at java.util.concurrent.locks.AbstractQueuedSynchronizer. acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1281) at java.util.concurrent.Semaphore.acquire(Semaphore.java:286) at org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineComm on_impl.sendAndReceiveCAS(BaseUIMAAsynchronousEngineCommon_impl.java:2062) at org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineComm on_impl.sendAndReceiveCAS(BaseUIMAAsynchronousEngineCommon_impl.java:1952) at de.averbis.extraction.[...].webservice.WebservicePort. getLanguage(WebservicePort.java:1214) at sun.reflect.GeneratedMethodAccessor2765.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.xml.ws.api.server.InstanceResolver$1.invoke( InstanceResolver.java:246) at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:146) at com.sun.xml.ws.server.sei.EndpointMethodHandler.invoke( EndpointMethodHandler.java:257) at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest( SEIInvokerTube.java:93) at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:598) at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:557) at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:542) at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:439) - locked (a com.sun.xml.ws.api.pipe.Fiber@5a8fe32) index 19 frame com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:439) at com.sun.xml.ws.server.WSEndpointImpl$2.process( WSEndpointImpl.java:243) at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit. handle(HttpAdapter.java:471) at com.sun.xml.ws.transport.http.HttpAdapter.handle( HttpAdapter.java:244) at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle( ServletAdapter.java:135) at com.sun.xml.ws.transport.http.servlet.WSServletDelegate. doGet(WSServletDelegate.java:129) at com.sun.xml.ws.transport.http.servlet.WSServletDelegate. doPost(WSServletDelegate.java:160) at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost( WSServlet.java:75) at javax.servlet.http.HttpServlet.service(Unknown Source) at javax.servlet.http.HttpServlet.service(Unknown Source) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source) at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source) at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source) at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source) at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source) at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source) at org.apache.catalina.valves.AccessLogValve.invoke(Unknown Source) at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source) at org.apache.catalina.connector.CoyoteAdapter.service(Unknown Source) at org.apache.coyote.ajp.AjpAprProcessor.process(Unknown Source) at org.apache.coyote.ajp.AjpAprProtocol$AjpConnectionHandler.process(Unknown Source) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker. runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662)
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