Lionel Cons created APLO-215:
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Summary: Broker may send queued messages multiple time over SSL
Key: APLO-215
URL: https://issues.apache.org/jira/browse/APLO-215
Project: ActiveMQ Apollo
Issue Type: Bug
Environment: apollo-99-trunk-20120621.153441-53
Reporter: Lionel Cons
When putting messages in a queue and removing them with client side
acknowledgments, Apollo may send some messages multiple times. Here is an
example test output:
$ perl test.pl
producing 3000 messages... done
consuming 1000 messages... done
consuming 1000 messages... done
consuming 1000 messages... done
draining... drained 13 messages
message 1000 received 2 times!
message 1994 received 2 times!
message 1995 received 2 times!
message 1996 received 2 times!
message 1997 received 2 times!
message 1998 received 2 times!
message 2988 received 2 times!
message 2989 received 2 times!
message 2990 received 2 times!
message 2991 received 2 times!
message 2992 received 2 times!
message 2993 received 2 times!
message 999 received 2 times!
done checking
The consumers are careful with client side acknowledgment so there should be
nothing left for the final drainer.
Please see the attached script for more details. You may need to play with the
number of messages or the number of consumers.
Note that the test script seems to work fine over STOMP. I've only seen
problems with STOMP+SSL.
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