Keith Wall created QPID-6268:
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Summary: Broker statistic Queue#unacknowledgedMessages is
maintained incorrectly when the client rolls-back a session with unacknowledged
messages
Key: QPID-6268
URL: https://issues.apache.org/jira/browse/QPID-6268
Project: Qpid
Issue Type: Bug
Components: Java Broker
Affects Versions: 0.30, 0.28, 0.26, 0.24, 0.22
Reporter: Keith Wall
Assignee: Keith Wall
The Broker statistic Queue#unacknowledgedMessages (named "Pre-fetched" on the
Queue tab in the Management UI) is incorrectly maintained in the event of a
client rollback if the client has one or more unacknowledged messages.
The defect can be demonstrated using the Python client, where a sequence of
receive message, rollback and receive same message and commit on a transacted
session, will leave a erroneous Queue#unacknowledgedMessages of 1.
It is not yet clear if the issue is also reproducible from the Qpid JMS Client
0-8..0-91 as this client explicitly rejects messages (thus avoiding the Broker
defect).
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