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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-5483) LRU cached message group map eviction is not reflected in consumer assigned counts
Date Thu, 11 Dec 2014 14:38:13 GMT
Gary Tully created AMQ-5483:
-------------------------------

             Summary: LRU cached message group map eviction is not reflected in consumer assigned
counts
                 Key: AMQ-5483
                 URL: https://issues.apache.org/jira/browse/AMQ-5483
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker
    Affects Versions: 5.10.0
            Reporter: Gary Tully
            Assignee: Gary Tully
             Fix For: 5.11.0


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.



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