[HDFS-10172] hdfs erasurecode command should remove the redundant -usage option

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha1
• Component/s: erasure-coding
• Labels: newbie
• Hadoop Flags: Reviewed
• Assignee: Yuanbo Liu
• Reporter: Wei-Chiu Chuang
• Created: 16/Mar/16 09:19
• Updated: 12/May/16 18:17
• Resolved: 10/May/16 22:21

Description

hdfs erasurecode has two similar options -help and -usage.

hdfs erasurecode -usage getPolicy
Usage: hdfs erasurecode [generic options] -getPolicy <path>

hdfs erasurecode -help getPolicy
-getPolicy <path> :
  Get erasure coding policy information about at specified path

I don't think the -usage option is that useful, because -help option already covers that. No other HDFS commands has the same -usage command.