Introduction

Apache NiFi 2.0.0 includes the removal of multiple deprecated extension components and legacy product features. Version 1.18.0 and following introduced deprecation logging to provide runtime warnings for elements targeted for removal. Upgrading to the latest version 1 release provides the most accurate set of deprecation warnings.

Manual changes must be completed prior to upgrading from version 1 to avoid breaking changes. Application settings and flow design changes should be completed and tested before upgrading.

Migrating from deprecated components and features requires different steps depending on configured properties. The level of difficulty varies based on the number of properties to be changed and the steps involved to maintain similar behavior.