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.BaseUIMAAsynchronousEngineCommon_impl.sendAndReceiveCAS(BaseUIMAAsynchronousEngineCommon_impl.java:2062)
at
org.apache.uima.adapter.jms.client.BaseUIMAAsynchronousEngineCommon_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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