Keith Wall created QPID-6468:
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Summary: [0-8..0-91] Use basic.nack for releasing messages back to
the Broker for delivery elsewhere
Key: QPID-6468
URL: https://issues.apache.org/jira/browse/QPID-6468
Project: Qpid
Issue Type: Improvement
Components: Java Broker, Java Client
Reporter: Keith Wall
The Java Broker/Client historically has abused AMQP [0-8..0-91] basic.reject to
release messages back to the Broker if the client no longer intends to deliver
them to the application (for example, the closing of a consumer requires that
messages that were optimistically prefetched now must be made available for
delivery elsewhere and must be released to the Broker). This was never the
intended use for basic.reject.
QPID-6164 introduced (the Rabbit specific) AMQP extension basic.nack to allow
for synchronous publishing. We can make use of the same mechanism (as do
Rabbit) for implementing message release on consuming side too.
This would tidy up lots of ugly code around the DLQ support within the Java
Broker, and allow the Qpid components to interop better with the Rabbit
components.
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