[RATIS-1728] Avoid org.apache.log4j imports

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.0.0, 2.5.0
• Component/s: test
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 24/Oct/22 15:00
• Updated: 27/Apr/23 17:53
• Resolved: 27/Oct/22 14:54

Description

All the org.apache.log4j imports are in tests.

• Most of them use org.apache.log4j.Level for changing log level. We should use org.slf4j.event.Level instead so that it is easier to change the slf4j binding.
• Some unused log4j code in RaftServerTestUtil should be removed.

Issue Links

• is related to: RATIS-1742 Remove slf4j-log4j12 test dependency from ratis-common and ratis-server
• links to: GitHub Pull Request #768