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From "Fernando (JIRA)" <...@tapestry.apache.org>
Subject [jira] Created: (TAPESTRY-2473) Thread Lock Ups, unkonwn cause
Date Mon, 23 Jun 2008 15:08:45 GMT
Thread Lock Ups, unkonwn cause
------------------------------

                 Key: TAPESTRY-2473
                 URL: https://issues.apache.org/jira/browse/TAPESTRY-2473
             Project: Tapestry
          Issue Type: Bug
          Components: Framework
    Affects Versions: 5.0.13, 5.0.12, 5.0.11
         Environment: Red Hat, Tomcat, java version "1.5.0_10"
            Reporter: Fernando
            Priority: Critical


We are running in production, and pretty regularly the system seems to hang up.  After I do
a jstack it looks like all the threads are tied up against some lock.

Can you help me figure out the root cause?

I will be attaching the full jstack the the stuck threads all look like:


Thread 25014: (state = BLOCKED)
 - sun.misc.Unsafe.park(boolean, long) @bci=0 (Compiled frame; information may be imprecise)
 - java.util.concurrent.locks.LockSupport.park() @bci=5, line=118 (Compiled frame)
 - java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(int) @bci=10, line=1124
(Compiled frame)
 - org.apache.tapestry.ioc.internal.util.ConcurrentBarrier.withRead(org.apache.tapestry.ioc.internal.util.Invokable)
@bci=27, line=70 (Compiled frame)
 - $RequestHandler_11aa7f96e6c.service(org.apache.tapestry.services.Request, org.apache.tapestry.services.Response)
@bci=10 (Compiled frame)
 - org.apache.tapestry.services.TapestryModule$12.service(javax.servlet.http.HttpServletRequest,
javax.servlet.http.HttpServletResponse) @bci=40, line=924 (Compiled frame)
 - $HttpServletRequestHandler_11aa7f96e65.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
@bci=10 (Compiled frame)
 - org.apache.tapestry.internal.services.IgnoredPathsFilter.service(javax.servlet.http.HttpServletRequest,
javax.servlet.http.HttpServletResponse, org.apache.tapestry.services.HttpServletRequestHandler)
@bci
=95, line=62 (Compiled frame)
 - $HttpServletRequestFilter_11aa7f96e63.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse,
org.apache.tapestry.services.HttpServletRequestHandler) @bci=7 (Compiled frame)
 - $HttpServletRequestHandler_11aa7f96e65.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
@bci=10 (Compiled frame)
 - $HttpServletRequestHandler_11aa7f96e65.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
@bci=10 (Compiled frame)
 - org.apache.tapestry.TapestryFilter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse,
javax.servlet.FilterChain) @bci=12, line=168 (Compiled frame)
 ......


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