Rob Godfrey created QPID-6088:
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Summary: [Java Client] AMQP 0-8/8/9-1 prefetch should auto expand
when receive is called in a situation where the prefetch buffer is full
Key: QPID-6088
URL: https://issues.apache.org/jira/browse/QPID-6088
Project: Qpid
Issue Type: Improvement
Components: Java Client
Reporter: Rob Godfrey
Assignee: Rob Godfrey
0-8/9/9-1 controls the message prefetch on a per-session basis... however space
if not freed in the prefetch buffer until messages are acknowledged/committed.
In the case of client-ack / transactional messaging setting the prefetch value
to a low number (e.g. 1) and then attempting to receive() multiple messages can
lead to an effective deadlock whereby the client is waiting for a message that
cannot come because the prefetch buffer is "full".
In the case where the client is explicitly calling receive() through the API we
should expand the prefetch buffer in an attempt to meet their request for new
messages.
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