[PROTON-200] Credit distribution by messenger is not balanced across all links

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: proton-0.3
• Fix Version/s: proton-0.6
• Component/s: proton-c, proton-j
• Assignee: Ken Giusti
• Reporter: Ken Giusti
• Created: 15/Jan/13 16:22
• Updated: 07/Jan/16 11:34
• Resolved: 23/Jan/14 19:30

Description

The method used to distribute credit to receiving links may lead to starvation when the number of receiving links is > the available credit.

The distribution algorithm always starts with the same link - see messenger.c::pn_messenger_flow()

Issue Links

• is blocked by: PROTON-375 Engine does not indicate when a link has completed draining.
• is blocked by: PROTON-394 Exhausting credit on a link can affect other links using the same session.
• is blocked by: PROTON-401 Ordering issue prevents credit drain from working properly
• is blocked by: PROTON-444 Java Messenger needs internal store.