IDataStore#removeData(String sessionId) is called when the session should not
have expired
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Key: WICKET-4374
URL: https://issues.apache.org/jira/browse/WICKET-4374
Project: Wicket
Issue Type: Bug
Components: wicket
Affects Versions: 1.5.4
Environment: Debian 6.0.2
Reporter: Arne Baganz
I´m running Wicket in a clustered setup (1 loadbalancer with non-sticky
sessions, 2 servers running the webapp, the sessions are stored in memcache).
I´m using a custom IDataStore relying on EhCache and I´m wondering about
IDataStore#removeData(String sessionId) being called quite often (wicket seems
to assume the session to be expired), even image resources call that method.
But the session should not be expired (at least I think it should not have),
because after IDataStore#removeData(String sessionId) has been called, the
webapp still tries to access pages from that very same session via
IDataStore#getData(String sessionId, int id) and tries to store pages via
IDataStore#storeData(String sessionId, int id, byte[] data). So in order to
keep my webapp working, I do not do anything in my implementation of
IDataStore#removeData(String sessionId) anymore, because it would break
AJAX-requests (the page could not be found in the store, because it had been
wiped via IDataStore#removeData(String sessionId) and the URL gets rewritten
with a fallback containing the notorious page id version after the quesion
mark, i.e. http://www.mypage.com/myfolder/myfile-11.html?0, which is not a
fitting response to the AJAX-request).
Unfortunately, I do not see an easy way to provide a quickstart, which
reproduces the problem. Even if I could provide a quickstart, it would maybe be
heavily dependent on my setup as described above.
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