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From Girish <>
Subject Message group not working when first group has large number of messages
Date Fri, 04 Oct 2013 11:46:47 GMT
We are evaluating usage of message groups on ActiveMQ 5.5.1 using JDBC based
Master/Slave configuration, with 1 queue and 8 consumers. What we are seeing
is that if the queue is flooded with messages (we tried in the range of 20K)
belonging to one group in short time-span and then add messages belonging to
different groups, the messages belonging to different groups get processed
serially instead of going to different consumer. We are using
simpleMessageGroupMapFactory policy as our Message group Ids can have any
long number. Is this is a known issue that is fixed in any subsequent
release?, also, the message-group to consumer assignments , are they
persisted in DB too? .. else how will the assignment get carried over to the
slave broker when master goes down?

would appreciate any pointers in this.

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