https://issues.apache.org/bugzilla/show_bug.cgi?id=49116
Summary: Memory leak by HttpSession.
Product: Tomcat 6
Version: 6.0.26
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
AssignedTo: dev@tomcat.apache.org
ReportedBy: kfuj...@apache.org
When session is stored in StandardManager#doUnload method,
an invalid session is stored.
For instance,
If HttpSession#invalidate is executed while executing StandardManager#doUnload,
session of "isValid=false" is stored.
The session of isValid=false is restored in StandardManager#doLoad,
and it registers in session map (sessions).
However, no one can invalidate this session.
If isValid is false, StandardSession#invalidate() and StandardSession#isValid()
can not expire session.
They are throws IllegalStateException or return immediately.
Consequently, the session of isValid=false is never deleted from the session
map(sessions).
I made a patch.
If session is already invalid, expire session to prevent memory leak.
Best Regards.
Keiichi.
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