the 0-10 client path does not act as expected with asynchronous consumers using
a prefetch of 1 on transacted sessions
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Key: QPID-3562
URL: https://issues.apache.org/jira/browse/QPID-3562
Project: Qpid
Issue Type: Bug
Components: Java Client
Affects Versions: 0.12
Reporter: Robbie Gemmell
Assignee: Robbie Gemmell
Fix For: 0.13
the 0-10 client path does not act as expected with asynchronous consumers using
a prefetch of 1 on transacted sessions, as the client is able to hold a 2nd
message during processing of a slow onMessage handler. This is because
completions are sent to ensure credit does not dry up, allowing a
large-than-prefetch number of messages to be consume in a given transaction.
However, this is done prior to delivery to the client application, which causes
the client to get sent a 2nd message by the broker.
This should isntead occur after delivery has completed (if it is necessary: the
client may have committed, which sends accepting completions anyway) to give
the expected behaviour.
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