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https://issues.apache.org/jira/browse/CXF-6943?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colm O hEigeartaigh closed CXF-6943.
------------------------------------

> Dead lock on Async Response when timeout is set
> -----------------------------------------------
>
>                 Key: CXF-6943
>                 URL: https://issues.apache.org/jira/browse/CXF-6943
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 3.0.4, 3.1.6
>         Environment: The bug was detected on :
>   - Java 1.7.0_11
>   - Tomcat 8.0.23
>   - CXF 3.0.4
>   - Red Hat 6.5
> The bug is also available on :
>   - Java 1.8.0_77
>   - Tomcat 8.0.35
>   - CXF 3.1.6
>   - Red Hat 6.5
>            Reporter: MOIRE Antony
>            Assignee: Sergey Beryozkin
>              Labels: test
>             Fix For: 3.0.10, 3.1.7, 3.2.0
>
>         Attachments: Main_Thread_error.txt, Working_Thread_error.txt, 
> async-response-test.zip
>
>
> Hello,
> When using AsyncResponse with timeout and an external thread for the 
> treatment, it seems that a dead lock appears between the main http thread and 
> the treatment thread when the treatment thread finished before the main 
> thread :
> Here is the code which reproduces this issue :
>     public Response asyncResponseTestKo(HttpServletRequest request, final 
> AsyncResponse ar) {
>         Response r = null;
>         LOGGER.info("Get request asyncResponseTestKo");
>         ar.setTimeout(10, TimeUnit.SECONDS);
>         poolExecutor.execute(new Runnable() {
>             @Override
>             public void run() {
>                 ar.resume(Response.ok().build());
>             }
>         });
>         try {
>             Thread.sleep(2000);
>         } catch (InterruptedException e) {
>             // TODO Auto-generated catch block
>             e.printStackTrace();
>         }
>         return r;
>     }
> The main thread error is :
> 2016-06-15 14:47:44
> "http-nio-9080-exec-1" - Thread t@25
>    java.lang.Thread.State: BLOCKED
>       at 
> org.apache.cxf.jaxrs.impl.AsyncResponseImpl.suspendContinuationIfNeeded(AsyncResponseImpl.java:263)
>       - waiting to lock <792a9e17> (a 
> org.apache.cxf.jaxrs.impl.AsyncResponseImpl) owned by "pool-1-thread-1" t@26
>       at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:191)
>       at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:99)
>       at 
> org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)
>       at 
> org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:96)
>       at 
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
>       - locked <5f36a728> (a org.apache.cxf.phase.PhaseInterceptorChain)
>       at 
> org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
>       at 
> org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:254)
>       at 
> org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)
>       at 
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)
>       at 
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)
>       at 
> org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:180)
>       at 
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:298)
>       at 
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:222)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
>       at 
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:273)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>       at 
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
>       at 
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
>       at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
>       at 
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
>       at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
>       at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
>       at 
> org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
>       at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
>       at 
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)
>       at 
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)
>       at 
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
>       at 
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)
>       at 
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)
>       - locked <32b056bb> (a org.apache.tomcat.util.net.NioChannel)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>       at 
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>       at java.lang.Thread.run(Thread.java:745)
>    Locked ownable synchronizers:
>       - locked <623f9d31> (a java.util.concurrent.ThreadPoolExecutor$Worker)
> The treatment thread error is :
> 2016-06-15 14:48:15
> "pool-1-thread-1" - Thread t@26
>    java.lang.Thread.State: WAITING
>       at java.lang.Object.wait(Native Method)
>       - waiting on <19991ed0> (a org.apache.coyote.AsyncStateMachine)
>       at java.lang.Object.wait(Object.java:502)
>       at 
> org.apache.coyote.AsyncStateMachine.pauseNonContainerThread(AsyncStateMachine.java:430)
>       at 
> org.apache.coyote.AsyncStateMachine.asyncDispatch(AsyncStateMachine.java:300)
>       at 
> org.apache.coyote.http11.AbstractHttp11Processor.action(AbstractHttp11Processor.java:863)
>       at org.apache.coyote.Request.action(Request.java:378)
>       at 
> org.apache.catalina.core.AsyncContextImpl.dispatch(AsyncContextImpl.java:238)
>       - locked <60e59a3c> (a java.lang.Object)
>       at 
> org.apache.catalina.core.AsyncContextImpl.dispatch(AsyncContextImpl.java:194)
>       at 
> org.apache.catalina.core.AsyncContextImpl.dispatch(AsyncContextImpl.java:188)
>       at 
> org.apache.cxf.transport.http.Servlet3ContinuationProvider$Servlet3Continuation.redispatch(Servlet3ContinuationProvider.java:125)
>       at 
> org.apache.cxf.transport.http.Servlet3ContinuationProvider$Servlet3Continuation.resume(Servlet3ContinuationProvider.java:131)
>       at 
> org.apache.cxf.jaxrs.impl.AsyncResponseImpl.doResumeFinal(AsyncResponseImpl.java:96)
>       - locked <792a9e17> (a org.apache.cxf.jaxrs.impl.AsyncResponseImpl)
>       at 
> org.apache.cxf.jaxrs.impl.AsyncResponseImpl.doResume(AsyncResponseImpl.java:89)
>       - locked <792a9e17> (a org.apache.cxf.jaxrs.impl.AsyncResponseImpl)
>       at 
> org.apache.cxf.jaxrs.impl.AsyncResponseImpl.resume(AsyncResponseImpl.java:78)
>       at test.AsyncResponseTestImpl$2.run(AsyncResponseTestImpl.java:72)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>       at java.lang.Thread.run(Thread.java:745)
>    Locked ownable synchronizers:
>       - locked <4f68ae20> (a java.util.concurrent.ThreadPoolExecutor$Worker)
> Best regards



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