[NIFI-5745] Load Balanced Connections can stop balancing across the cluster if all nodes report backpressure and all data destined for another node

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0
• Fix Version/s: 1.9.0
• Component/s: Core Framework
• Assignee: Mark Payne
• Reporter: Mark Payne
• Created: 24/Oct/18 17:05
• Updated: 26/Oct/18 07:06
• Resolved: 26/Oct/18 07:06

Description

If a connection is load balanced, and backpressure is configured, we can possibly get into a situation where all nodes want to send data to other nodes, but those nodes are applying backpressure. If this backpressure is applied only due to flowfiles existing in the connection, waiting to be distributed, we can reach a live lock scenario.

Issue Links

• links to: GitHub Pull Request #3108