netui's DeferredSessionStorageHandler should persist session attributes
atomically
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Key: BEEHIVE-1099
URL: http://issues.apache.org/jira/browse/BEEHIVE-1099
Project: Beehive
Type: Bug
Components: NetUI
Versions: V1, v1m1, 1.0.1, v.next
Reporter: Eddie O'Neil
Assigned to: Eddie O'Neil
Fix For: v.next
This bug tracks the conversation going on in [EMAIL PROTECTED]:
http://mail-archives.apache.org/mod_mbox/beehive-dev/200603.mbox/[EMAIL
PROTECTED]
about a threading problem with NetUI's DeferredSessionStorageHandler's
acceptChanges() method. This method performs two updates to the HttpSession to
first apply attributes to the session and second step to ensure that the
appropriate attributes failover in a clustered server environment. When both
of these operations execute and interact with the HttpSession, it's possible to
have values changed in the session between accepting changes and ensuring
failover of those attributes.
When this happens, the ensure failover call can cause the destroy part of a
Page Flow lifecycle to be invoked on a Page Flow. In some rare circumstances,
this can result in deadlock.
I've actually got a fix for this that will go in shortly...
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