[NIFI-11162] When upgrading, rolling restart nodes to avoid service interruption

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Resolved
• Affects Version/s: 1.20.0
• Component/s: Core Framework
• Assignee: Unassigned
• Reporter: macdoor615
• Created: 10/Feb/23 01:55
• Updated: 06/Oct/23 16:08
• Resolved: 06/Oct/23 16:08

Description

The current upgrade requires stopping all nodes at the same time, upgrading all nodes, and then restarting all nodes, which will interrupt the service.

It is recommended to support rolling upgrades, each node is stopped, upgraded, and restarted one by one to avoid service interruption.

Before all nodes are upgraded, the early version of the inter-connection protocol is adopted between nodes. When all nodes are upgraded, the inter-connection protocol will upgrade to the current version.

Issue Links

• is related to: NIFI-10676 NiFi does not negotiate compatible versions when loading flow from cluster connection response
• is superceded by: NIFI-12016 Improve leniency for bundle compatibility to allow for rolling upgrades