[HDFS-15335] Report top N metrics for files in get listing ops

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: hdfs, metrics
• Assignee: Unassigned
• Reporter: Chao Sun
• Created: 05/May/20 22:42
• Updated: 06/May/20 02:23

Description

Currently HDFS has filesInGetListingOps metrics which tells the total number of files in all listing ops. However, it will be useful to report the top N users who contribute most to this. This can help to identify the potential bad users and stop the abusing against NameNode.