Re: [Wrapper-user] wrapper.shutdown.timeout properties

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

Matsushita-san,

>I am currently woking on with wrapper version 3.0.5(due to project policy,
>we cannot upgrade JSW to latest version).  I had problem with JVM shutting
>down before the application actually wants it.  I seem to solve this by
>setting wrapper.shutdown.time.out to a relatively large number.
>
>I have few questions about this property.
>
>1. Having set this to zero, wrapper will not shutdown JVM unless the
>"STOPPED" packet is sent from Java side?
>  
>
That is correct.   After the Wrapper asks the application running in the 
JVM to stop, it
will wait up to "wrapper.shutdown.timeout" seconds for the 
WrapperManager in the
JVM to signal that the application has stopped.  This is done by sending 
a STOPPED
packet to the Wrapper.

By setting it to 0.  You are allowing an infinite amount of time for 
your application to
stop.   If you really want a large value, I strongly suggest using a 
value like 300 (5 minutes)
rather than 0.

>2. I don't understand the difference between wrapper.shutdown.time.out and
>wrapper.jvm.exit.timeout.  In the document, it says wrapper.jvm.exit.timeout
>as the "later phase".  Supposely the "wrapper.jvm.exit.timeout" waits for
>STOPPED packet, what does wrapper.jvm.exit.timeout wait for?
>  
>
Once the Wrapper has been notified that the Application running in the 
JVM has
STOPPED, the Wrapper will wait "wrapper.jvm_exit.timeout" additional seconds
for the JVM process to actually exit.   If it does not exit within the 
timeout then the
Wrapper will forcibly kill the JVM process.

If your application registers its own shutdown hooks, then it is 
possible that the
WrapperManager's shutdown hook could complete before yours have completed.
In such cases, the JVM could take a while to shutdown after the STOPPED 
packet
has been sent.   I'll take a look at clarifying this in the docs.

If your post your wrapper.log with wrapper.debug=true.  I may be able to 
tell you
which of the timeouts you need to be setting to solve your shutdown 
problems.

Cheers, (Yoroshiku onegaishimasu)
Leif