The duplicate detection mechanism for clustered queue is getting influenced by two parameters * confirmation-window-size and * duplicate-cache-size If those parameters don't fit together in a certain range the algorithm might fail. Such a miss-configuration should get detected and a warning message should get logged to make the responsible admin aware.
*** Bug 1319702 has been marked as a duplicate of this bug. ***
*** Bug 1319701 has been marked as a duplicate of this bug. ***
Verified with EAP 6.4.9.CP.CR2
Retroactively bulk-closing issues from released EAP 6.4 cummulative patches.