https://issues.apache.org/bugzilla/show_bug.cgi?id=55144
Bug ID: 55144
Summary: NIO connection locked when trying to release it
Product: Tomcat 7
Version: 7.0.41
Hardware: PC
Status: NEW
Severity: major
Priority: P2
Component: Connectors
Assignee: dev@tomcat.apache.org
Reporter: pavel.re...@gmail.com
I'm using Atmoshphere framework and when I try to resume a resource it locks
(can be for hours)
I'm not sure how to reproduce since it's happening on our prod servers.
Using
windows server 2008 standard x64 R2,
tomcat 7.0.41,
java jrockit-jdk1.6.0_37-R28.2.5-4.1.0
This was happening since version 7.0.30 (that's the one we started using)
see dump:
"CleanResourceTask" id=79 idx=0x14c tid=228160 prio=5 alive, parked,
native_blocked, daemon
at jrockit/vm/Locks.park0(J)V(Native Method)
at jrockit/vm/Locks.park(Locks.java:2230)[optimized]
at jrockit/proxy/sun/misc/Unsafe.park(Unsafe.java:616)[inlined]
at
java/util/concurrent/locks/LockSupport.parkNanos(LockSupport.java:196)[inlined]
at
java/util/concurrent/locks/AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1011)[inlined]
at
java/util/concurrent/locks/AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1303)[inlined]
at
java/util/concurrent/CountDownLatch.await(CountDownLatch.java:253)[inlined]
at
org/apache/tomcat/util/net/NioEndpoint$KeyAttachment.awaitLatch(NioEndpoint.java:1577)[inlined]
at
org/apache/tomcat/util/net/NioEndpoint$KeyAttachment.awaitWriteLatch(NioEndpoint.java:1580)[inlined]
at
org/apache/tomcat/util/net/NioBlockingSelector.write(NioBlockingSelector.java:109)[optimized]
at
org/apache/tomcat/util/net/NioSelectorPool.write(NioSelectorPool.java:174)[optimized]
at
org/apache/coyote/http11/InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:163)[inlined]
at
org/apache/coyote/http11/InternalNioOutputBuffer.flushBuffer(InternalNioOutputBuffer.java:242)[optimized]
^-- Holding lock:
org/apache/coyote/http11/InternalNioOutputBuffer@0x0000000222F4BE70[fat lock]
at
org/apache/coyote/http11/InternalNioOutputBuffer.endRequest(InternalNioOutputBuffer.java:121)
at
org/apache/coyote/http11/AbstractHttp11Processor.action(AbstractHttp11Processor.java:752)[optimized]
at org/apache/coyote/Response.action(Response.java:173)[inlined]
at org/apache/coyote/Response.finish(Response.java:279)[inlined]
at
org/apache/catalina/connector/OutputBuffer.close(OutputBuffer.java:313)[optimized]
at org/apache/catalina/connector/Response.finishResponse(Response.java:512)
at
org/apache/catalina/connector/CometEventImpl.close(CometEventImpl.java:96)
at
org/atmosphere/container/Tomcat7CometSupport.bz51881(Tomcat7CometSupport.java:178)[optimized]
at
org/atmosphere/container/Tomcat7CometSupport.action(Tomcat7CometSupport.java:209)
at
org/atmosphere/container/Tomcat7CometSupport.action(Tomcat7CometSupport.java:47)
at
org/atmosphere/cpr/AtmosphereResourceImpl.resume(AtmosphereResourceImpl.java:323)[optimized]
at
com/fx/tasks/CleanResourceTask.resumeOldResources(CleanResourceTask.java:97)[inlined]
at
com/fx/tasks/CleanResourceTask.access$200(CleanResourceTask.java:26)[optimized]
at com/fx/tasks/CleanResourceTask$1.run(CleanResourceTask.java:51)
at java/lang/Thread.run(Thread.java:662)
at jrockit/vm/RNI.c2java(JJJJJ)V(Native Method)
-- end of trace
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