While doing some testing with 6.0.26 I noticed, that when shutting it
down it logs an error about thread "Poller SunPKCS11-Solaris" not being
stopped. When I add the more explicit logging from tc6 trunk, it says
the thread was started by /manager.
The thread sits in
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at sun.security.pkcs11.SunPKCS11$TokenPoller.run(SunPKCS11.java:681)
at java.lang.Thread.run(Thread.java:619)
and is started for some version of the JDK (noted on Solaris for e.g.
1.5.0_22 and 1.6.0_3, not for 1.6.0_17) even without having anything
related to keystores, https or similar configured in Tomcat (default
config). The only non-default is using Log4J instead of Juli.
What is strange, is that the check whether the context class loader of
the thread is equal to the WebappClassLoader of the context to unload
passes. I added an additional output by explicitely printing the
contextName of the two loaders and in fact both print "/manager".
When deploying two instances of the manager and reloading the original
instance with the additional one, I get the same warning.
In a heap dump, it seems the context class loader of the thread is the
system class loader and not of type WebappClassLoader. Any idea, why the
context class loader test fails? Is there any reason why the context
class loader of the thread might change when doing the manager reload or
shutdown?
Regards,
Rainer
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