[AMQ-6947] Queue pending message count can go negative on duplicates

• Type: Bug
• Status: Reopened
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 5.15.3
• Component/s: Broker
• Assignee: Unassigned
• Reporter: Christopher L. Shannon
• Created: 17/Apr/18 12:23
• Updated: 18/Apr/18 16:36

Description

I have a found an edge case where the destination statistics counter on a Queue can go negative if there are duplicate messages (which should be rare).  The issue is the statistic is decremented but should not be because the message was already dropped since there was a duplicate.  Also, another statistic is improperly incremented which is the dequeue counter.