July 23, 2026

Release 3.1.0-h4-b4 introduces new self-healing capabilities to ensure your flow drafts stay perfectly synced, alongside key performance optimizations for shared parameter groups.

Fixed issues

ENGESC-33670: Unable to publish flows after execution of a NiFi 1.x to NiFi 2.x Migration: Fixes an issue where if the system experienced slower performance, flow drafts could fall out of sync between the workload and the control plane, leaving them in a permanently failed state. To fix this, Cloudera built in a new self-healing logic. The system now actively prevents drafts from being dropped prematurely and will automatically recreate them if they ever do lose sync.
ENGESC-33671: Unable to add a new parameters to existing shared parameter groups: Fixes a timeout error that blocked users from adding new parameters to a shared parameter group. This occurs when there are 10 or more active test sessions relying on that same shared group. We’ve optimized how these groups are handled in flow drafts, so you can now smoothly update your parameters without hitting a timeout, no matter how many test sessions you have running.