Re: [Wrapper-user] Trouble using wrapper.commandfile property to generate a thread dump

[Leif M. <le...@ta...>]

Gary,
This is a known problem that has been fixed for the 3.3.0 release.
The problem is that a dump signal can not be sent from a process
which does not have a console as is the case with services.

For now, you can work around the problem by setting the
wrapper.ntservice.console=true
property.   This will cause a console window to be created,
but you will not see it unless the wrapper.ntservice.interactive
property is also set to true.

Another workaround is to set the
wrapper.request_thread_dump_on_failed_jvm_exit=true

Let me know if this works for you.

I will need more information to tell you why you are getting that error
on shutdown.  Set the wrapper.debug=true property and post the
output.

Cheers,
Leif

Gary Hirschhorn wrote:
>
> I am trying to use the wrapper.commandfile property to generate a 
> thread dump when running as an NT Service, but I am getting the error 
> message below in the log files. If I try to stop the service instead, 
> the service does stop, but I get error messages indicating that it 
> could not stop cleanly.  Does anyone know why this would happen and 
> how I can generate a thread dump?  I have included my configuration 
> properties file below.
>
> Thank you very much for any help.
>
>
> STATUS | wrapper  | 2007/06/04 03:20:32 | Command 'DUMP'. Requesting a 
> Thread Dump.
> STATUS | wrapper  | 2007/06/04 03:20:32 | Dumping JVM state.
> ERROR  | wrapper  | 2007/06/04 03:20:32 | Unable to send BREAK event 
> to JVM process.  Err(6 : The handle is invalid. (0x6))
>
>
> STATUS | wrapper  | 2007/06/04 03:24:12 | Command 'STOP'. Shutting 
> down with exit code 0.
> INFO   | jvm 1    | 2007/06/04 03:24:13 | Jun 4, 2007 3:24:12 AM 
> org.apache.coyote.http11.Http11BaseProtocol pause
> INFO   | jvm 1    | 2007/06/04 03:24:13 | INFO: Pausing Coyote 
> HTTP/1.1 on http-7101
> INFO   | jvm 1    | 2007/06/04 03:24:13 | Jun 4, 2007 3:24:13 AM 
> org.apache.catalina.core.StandardService stop
> INFO   | jvm 1    | 2007/06/04 03:24:13 | INFO: Stopping service 
> FetchAgentRunnerServer
> ERROR  | wrapper  | 2007/06/04 03:24:50 | Shutdown failed: Timed out 
> waiting for signal from JVM.
> ERROR  | wrapper  | 2007/06/04 03:24:50 | JVM did not exit on request, 
> terminated
> STATUS | wrapper  | 2007/06/04 03:24:51 | <-- Wrapper Stopped
>