MQSeries.net :: View topic - Managing High load failure scenarios for the Aggregation nod

eai_developer123 · Posted: Fri Jun 01, 2018 6:21 pm Post subject:

A common scenario in WMB message flows is when the aggregation message flows call multiple validation services which are supposed to return a reply within 2 minutes.

In normal scenarios, 10 to 50 requests are handled per minute.

In high volume load scenarios, more than 100 requests are received per minute which leads to the failure of aggregation message flows. The aggregate replies from validation services will pile up on the internal broker aggregation reply queues making any new requests impossible.

The piled up requests have to be cleared and only then the failed requests can be retried using a retry message flow which reads the aggregation requests from the input backout queue and processes them once again.

This issue requires attention from IBM and can be fixed by having queue depth monitors or triggers on the internal aggregate request and reply queues. These piled up messages should be cleared automatically and after the timeout of 2 minutes which was mentioned in the aggregation message flows.

I would like to bring this issue to the notice of IBM and a PMR has to be raised for this. We faced this issue in production and would like to request a fix for the issue.