APM - MQ Errors Per Interval metric values cycles between 1 and 2 and back in consecutive 15 sec internals, but Messages Received Per Interval remains at 0 for all intervals

Products

• CA Application Performance Management (APM / Wily / Introscope)
• DX APM SaaS
• CA Application Performance Management Agent (APM / Wily / Introscope)
• DX Application Performance Management

Issue/Introduction

MQ metrics are  being reported however the Errors Per Interval metrics under Frontends|Messaging Services (receive) node have non zero values when Messages Received Per Interval reports value 0 for all intervals.  

Environment

Release : 20.x, 21.x,10.7

Component : APM Agents

Cause

This behaviour was expected due to the application nature. The application polls the queue for new messages and if it is empty gets a 2033 error - due to the way it is polled i.e. get next message 

Resolution

Customer circumvented the problem by configuring Error Detector to ignore 2033 errors by setting the following agent profile property

introscope.agent.errorsnapshots.ignore.0=*MQJE001: Completion Code '2', Reason '2033'.*