[HADOOP-17227] improve s3guard markers command line tool

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.3.1
• Component/s: fs/s3
• Labels: pull-request-available
• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 25/Aug/20 19:18
• Updated: 27/Oct/20 18:13
• Resolved: 04/Sep/20 14:01

Description

The s3guard markers audit -expected N command is meant to verify that the marker count is N, but

• it isn't verified if the #of markers is 0, so you can't use it to assert that markers have been created
• it doesn't work for tests where you expect a minimum number of markers.

It's essentially setting a max #of markers

Proposed: explicit -min, -max args to declare a specific range of values

Issue Links

• causes: HADOOP-17332 S3A marker tool mixes up -min and -max
• relates to: HADOOP-13230 S3A to optionally retain directory markers
• links to: GitHub Pull Request #2254
• links to: https://github.com/apache/hadoop/pull/2254