Manager - STOP application fails to stop session!!! 2004-01-15 - By Bruno.Melloni@(protected)
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SUMMARY OF PROBLEM - for future people scanning the archives:
Needed to disable session persistence for an application.
SOLUTION:
To turn off session persistence for an application, include a Manager clause
(similar to this one) in the application context file:
<Manager className="org.apache.catalina.session.PersistentManager  "
debug="0"
saveOnRestart="false"
maxActiveSessions="-1"
minIdleSwap="-1"
maxIdleSwap="-1"
maxIdleBackup="-1">
<Store className="org.apache.catalina.session.FileStore "
directory="logs/sessions" />
</Manager>
It does not seem to be necessary for the logs/sessions directory to actually
exist.
To safely deploy an application you can use the manager webapp (http:/
/localhost:8080/manager/html) stop command before deploying and start command
afterwards. Or use the manager http interface from a script or ant build, to
stop, deploy, start the application.
REASON FOR DISABLING PERSISTENCE:
For an application that is stable and unchanging, and that has ONLY
serializable objects in the session, persistence is highly desirable. Admins
may stop and start the servers (provided they are reasonably quick) without
significant effect to the users.
For an application that is likely to be updated with new versions, where the
list of objects in the session may change from one version to the next, or
where there are non-serializable objects in the session, disabling session
persistence is a must.
SUGGESTION FOR DEVELOPERS:
It seems silly to have to fully define the PersistentManager in order to
disable it. It would be nice if there was a simple clause to disable session
persistence for an application.
bruno
P.S.: My thanks to Yoav Shapira for helping resolve this issue, and to Steven
Job for having the opposite problem and posting his application Context, which
helped me clarify my understanding.
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