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 <frank.end...@averbis.com>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) >
