We are using Camunda 7v22 as embedded engine. We have used delegate pattern to implement service tasks. This spring boot based application deployed in Open Shift cluster with min 2Pod and that can grow up to max 4 Pods.
We activate async continuation in some steps of the process. We also override default incident handler so that in case of any unhandled exception in the process, we can trigger email and trigger our own exception flow.
We are frequently getting -
Unknown property used in expression : ${bean name}. Cause: Cannot resolve identifier ‘bean name’
Once this error occurred in a particular pod, all the subsequent requests on this pod are also getting failed with the same error. Once we restart the Pod, then subsequent requests are processing further.
When this error occurring, our incident handler is not called, whereas we could see incident in DB.
Can anyone please give some pointer as we are not able to identify the root cause of this issue yet and it’s impacting PROD env as well.