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Chuck,
On 3/14/12 2:04 PM, Caldarale, Charles R wrote:
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Subject: JVM won't shut down: DestroyJavaVM thread stuck on ??
All threads are deamons except for this one:
DestroyJavaVM prio=10 tid=0x7fa528a77800 nid=0x4b2a waiting
on condition [0x] java.lang.Thread.State:
RUNNABLE
That's a dummy Java thread created during the shutdown processing
to have something to do joins with.
Good to know.
Given your symptoms, it looks like something non-Java inside the
JVM itself is stuck.
I'm not using anything native that is specific to the app or Tomcat.
None of the stack traces I remember seeing looked suspicious.
Does it ever break loose from this situation?
It will certainly stay stuck for several minutes. I didn't time it
from the point when I tried to shut it down until I eventually killed
the process.
The only reason I knew something was wrong was because trying to
start-up again I got an error about the connector port being
unavailable. That was weird, because Tomcat appeared to have
completely shut down, including closing its sockets.
Is it possible that one of the daemon threads isn't actually idle,
but instead off doing something like waiting on a socket with
infinite timeout? (Although I think even that should respond to a
shutdown.)
That certainly is possible. If I can get it to happen again, I'll get
much better data.
Thanks,
- -chris
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