I've discussed this further with Tomas and he told me he successfully tested that our impl does not exceed given (configured) memory limits.You have to switch the queue settings to: address-full-policy=BLOCK (default is PAGE, which can cause exceeding the disk space and perhaps slow down the node if there are really lot of recipients. which is, well, not ideal) :-).The best option would be to use address-full-policy=FAIL. I believe this will fail transaction and the queue will try to redeliver, but still have to get to confirming that. (This can be configured to exponential back-off and try to deliver so many times that it really does its job (such as try to redeliver after 5 seconds, but repeat that e.g. up to 2 hours, then fail the message finally as non-deliverable)).On Thu, Nov 5, 2015 at 10:43 AM, Lukas Fryc <lfryc@redhat.com> wrote:I've updated the related issue to track the idea: https://issues.jboss.org/browse/AGPUSH-1521On Thu, Nov 5, 2015 at 9:22 AM, Matthias Wessendorf <matzew@apache.org> wrote:awesome, great to hear -For the 1.1.x (mainly 1.1.1 first ;-)) let's see if we can provide an optimized strategy. Lukas was already hinting this on IRC.Tomas, thanks for the updates and the testing effort!On Thu, Nov 5, 2015 at 8:57 AM, Tomáš Hradec <thradec@gmail.com> wrote:_______________________________________________Hi allI did some testing of JMS workflow used in UPS during sending notifications. I can confirm, that suggested blocking strategy, as protection against OOM errors, works as expected. However in worst scenario could cause blocking 6 of 20 threads (from MDBs pool). So I would suggest using different approach, with more optimal resource usage, some options were discussed already with Lukas.RegardsTomas
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