[HADOOP-17482] Remove Commons Logger from FileSystem Class

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.4.0
• Component/s: common
• Labels: pull-request-available
• Hadoop Flags: Incompatible change, Reviewed
• Release Note: The protected commons-logging LOG has been removed from the FileSystem class. Any FileSystem implementation which referenced this for logging will no longer link. Fix: move these implementations to using their own, private SLF4J log (or other logging API)
• Assignee: David Mollitor
• Reporter: David Mollitor
• Created: 20/Jan/21 20:13
• Updated: 01/Sep/21 14:58
• Resolved: 12/Mar/21 19:28

Description

Remove reference to Commons Logger in FileSystem, it already has SLF4J, so it's a bit weird to be mixing and matching and interweaving loggers in this way. Also, my hope is to eventually migrate everything to SLF4J to simplify things for downstream consumers of the common library.

Issue Links

• causes: HADOOP-17581 Fix reference to LOG is ambiguous after HADOOP-17482
• links to: GitHub Pull Request #2633