[AMQ-5483] LRU cached message group map eviction is not reflected in consumer assigned counts

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.10.0
• Fix Version/s: 5.11.0
• Component/s: Broker
• Labels: messageGroups
• Assignee: Gary Tully
• Reporter: Gary Tully
• Created: 11/Dec/14 14:37
• Updated: 11/Dec/14 14:53
• Resolved: 11/Dec/14 14:53

Description

by default, consumers are ordered by consumer priority and number of assigned message groups. The group assignment lru map can evict group associations, but the eviction is only noticed on next use of the groupid at dispatch, which may never happen. This leaves consumers less likely to get new groups assigned in error. The combination of a low cache size and long lives consumers should allow even distribution.