[HDFS-3834] Unused Command.java fields NAME, DESCRIPTION and USAGE

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha1
• Component/s: shell
• Hadoop Flags: Reviewed
• Assignee: Jing Zhao
• Reporter: Jing Zhao
• Created: 21/Aug/12 23:58
• Updated: 13/May/16 05:18
• Resolved: 24/Aug/12 17:37

Description

The static fields NAME, USAGE AND DESCRIPTION in Command.java are not used and cannot be overridden by subclasses since Java does not support static variable overriding. We can get rid of these three fields in the Command.java and only keep them as static fields in subclasses.