Hello,
Our production server stopped processing AJAX requests today. I looked
in the log files and noticed a "After 1 minute the Pagemap null is
still locked".
The exception stack trace is shown below followed by a dump of the
thread that was blocking the page.
We are using Wicket 1.4.2, Tomcat 6.0 and Java 6.
Could anybody help troubleshoot this problem?
Thanks,
Alec
EXCEPTION
2010-10-25 21:55:32,501 GMT ERROR [TP-Processor12]
org.apache.wicket.RequestCycle -
org.apache.wicket.WicketRuntimeException: After 1 minute the Pagemap
null is still locked by: Thread[TP-Processor1,5,main], giving up
trying to get the page for path: 4:offersForm:offers:1:editOfferLink
Begin of stack trace of Thread[TP-Processor1,5,main]
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
java.io.BufferedInputStream.read(BufferedInputStream.java:317)
org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:621)
org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:559)
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:686)
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
java.lang.Thread.run(Thread.java:619)
End of stack trace of Thread[TP-Processor1,5,main]
org.apache.wicket.protocol.http.request.InvalidUrlException:
org.apache.wicket.WicketRuntimeException: After 1 minute the Pagemap
null is still locked by: Thread[TP-Processor1,5,main], giving up
trying to get the page for path: 4:offersForm:offers:1:editOfferLink
Begin of stack trace of Thread[TP-Processor1,5,main]
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
java.io.BufferedInputStream.read(BufferedInputStream.java:317)
org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:621)
org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:559)
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:686)
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
java.lang.Thread.run(Thread.java:619)
End of stack trace of Thread[TP-Processor1,5,main]
at
org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(WebRequestCycleProcessor.java:262)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1310)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:312)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.apache.wicket.WicketRuntimeException: After 1 minute
the Pagemap null is still locked by: Thread[TP-Processor1,5,main],
giving up trying to get the page for path:
4:offersForm:offers:1:editOfferLink
Begin of stack trace of Thread[TP-Processor1,5,main]
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.read(SocketInputStream.java:129)
java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
java.io.BufferedInputStream.read(BufferedInputStream.java:317)
org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:621)
org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:559)
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:686)
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
java.lang.Thread.run(Thread.java:619)
End of stack trace of Thread[TP-Processor1,5,main]
at org.apache.wicket.Session.getPage(Session.java:769)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.resolveRenderedPage(AbstractRequestCycleProcessor.java:458)
at
org.apache.wicket.protocol.http.WebRequestCycleProcessor.resolve(WebRequestCycleProcessor.java:144)
... 24 more
THREAD DUMP
INFO | jvm 1 | 2010/10/25 18:00:52 | "TP-Processor1" daemon
prio=10 tid=0x0a615c00 nid=0x47ed runnable [0x8b45c000]
INFO | jvm 1 | 2010/10/25 18:00:52 | java.lang.Thread.State: RUNNABLE
INFO | jvm 1 | 2010/10/25 18:00:52 | at
java.net.SocketInputStream.socketRead0(Native Method)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
java.net.SocketInputStream.read(SocketInputStream.java:129)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
java.io.BufferedInputStream.read(BufferedInputStream.java:317)
INFO | jvm 1 | 2010/10/25 18:00:52 | - locked <0x995c0d18> (a
java.io.BufferedInputStream)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
org.apache.jk.common.ChannelSocket.read(ChannelSocket.java:621)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
org.apache.jk.common.ChannelSocket.receive(ChannelSocket.java:559)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:686)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
INFO | jvm 1 | 2010/10/25 18:00:52 | at
java.lang.Thread.run(Thread.java:619)
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