Thanks Chris.
In this case is a bug in the (old version of the) Axis2 library we use
to build and run a web service client.
I have upgraded Axis2 and waiting to see if the issue resurfaces.
The idea to use a new thread to manage the session event handles doesn't
apply here cause of application constraints and because operations are
quite simple.
But thanks for the advice.
Cheers
Il 26/07/2021 23:15, Christopher Schultz ha scritto:
Ivano,
On 7/23/21 02:20, Ivano Luberti wrote:
I have found the issue: one of the webapps has several thread locked
on a MultiThreadedHttpConnectionManager during sessionUnbound and
unboundEvents.
So the background process killing the sessions is stuck as well.
This is a very easy problem to encounter. Session event-handlers
really need to be bulletproof and execute very quickly.
If you need a long-running process to trigger, use an executor service
or something where you can capture the information to be used and
off-load it onto another thread. Remember that the session cannot be
used after the event-handler completes, so capture whatever
information you need from the session FIRST, then dispatch to another
thread, then return from the event-handler.
-chris
Il 21/07/2021 18:13, Mark Thomas ha scritto:
On 21/07/2021 16:00, Ivano Luberti wrote:
Il 21/07/2021 16:44, Mark Thomas ha scritto:
Take 3 thread dumps 5 seconds apart and post them here.
How to take thread dumps?
kill -3 <pid> ?
That will work. There are lots of ways. This is most of them:
https://www.baeldung.com/java-thread-dump
Mark
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