Timothy Simecsek created ISIS-1506:
--------------------------------------
Summary: tomcat shutdown - threads in PARK state
Key: ISIS-1506
URL: https://issues.apache.org/jira/browse/ISIS-1506
Project: Isis
Issue Type: Bug
Components: Core
Affects Versions: 1.13.0
Reporter: Timothy Simecsek
Assignee: Dan Haywood
Attachments: catalina.log
Hi Dan,
Today I monitored threads created within our application while running on
tomcat 8.5.3x64 because of an issue in my code.
While doing that I noticed that there were two threads called Thread-7 and
Thread-8 (name was stable during a lot of starts but only on the first start)
that I wasn't able to find in my code so I debugged a bit deeper and found that
they were created in
org.apache.isis.core.runtime.threadpool.ThreadPoolSupport:76 during start-up.
After that they are going to state PARK and reside even when undeploying the
application from tomcat.
I haven't looked much at your code but I believe you should call shutdown on
the ThreadPoolExecutor that you are using once you are finished or in
PreDestroy situation. At least I had a very similar issue in my application and
shutdown() solved it.
Please find attached a screenshot of IntelliJ view during debug, the screenshot
of VisualVM and the catalina log from tomcat complaining about these two
threads.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
