[NIFI-10147] Remove Support for Java 8

• Type: Epic
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0-M1
• Component/s: Core Framework, MiNiFi, NiFi Registry, NiFi Stateless
• Epic Name: Remove Support for Java 8
• Epic Status: In Progress
• Assignee: David Handermann
• Reporter: David Handermann
• Created: 21/Jun/22 14:08
• Updated: 16/Jun/23 22:20
• Resolved: 24/Mar/23 18:10

Description

Although multiple vendors have planned extended support for Java 8, a number of projects are in the process of deprecating and removing support for Java 8. These projects include the following:

• Jetty 9.4
• Spring 5
• OpenSAML 3

Apache NiFi should also remove support for Java 8 in order to maintain active support for various components.

Removing support for Java 8 requires a new major version release and will also require several build configuration changes including the following:

• Updating Maven source and compiler settings
• Updating minimum Java build version
• Removing optional Maven build profiles
• Updating GitHub workflows

Initial discussion on a migration strategy included a tentative target of the end of calendar year 2022.

Implementation should not proceed until after a minor release of Apache NiFi 1.17.0.

Mailing list discussion: https://lists.apache.org/thread/mm1xf3b9nvrcgytb92oy3swvvc45fl34

Issue Links

• depends upon: NIFI-9188 Upgrade docker base image to 11-jre

Sub-Tasks

• Add Deprecation Logging for Java 8 on Startup: Resolved
• Remove Java 8 references and update Github Workflows/Template: Resolved
• Remove optional jigsaw Maven build profiles: Resolved