[QPID-3602] Fix Consumer message credit issues in 0-10 codepath

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 0.14
• Fix Version/s: Future
• Component/s: JMS AMQP 0-x
• Labels: message-credit
• Assignee: Rajith Muditha Attapattu
• Reporter: Rajith Muditha Attapattu
• Created: 09/Nov/11 18:11
• Updated: 30/Jan/18 17:22
• Resolved: 30/Jan/18 17:22

Description

Currently there are several issues related to message credits.

1. QPID-2604 - Getting more messages than required by the prefetch value.

2. QPID-3604 - If connection is started and stopped, the client may get more messages than required by the prefetch value.

3. QPID-3562 - Prefetch=1 case doesn't work properly.

4. Prefetch-0 case doesn't work properly (well completely broken).

5. QPID-3612 -Message credits are affected by Command Completions and not message-acks. However these two are intertwined in the logic causing some issues. For example when in client-ack mode or using transactions, if the client has exhausted the credits, but is waiting for more messages to come before it acks or commits a transaction, then the client will appear hung (This issue is currently masked due to some of the above bugs).

6. QPID-3613 Credit should be managed on a per subscription basis than on a per session basis.

Issue Links

• is blocked by: QPID-3629 CPP Broker allows credit window to exceed the request size.