[CASSANDRA-19671] Nodetool tablestats: add keyspace space used

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 5.1
• Component/s: Tool/nodetool
• Change Category: Operability
• Complexity: Low Hanging Fruit
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/b9f900947adb254a395bb535a402c26e02c457a2

Test and Documentation Plan

CI & manual

• Assignee: Arun Ganesh
• Reporter: Brad Schoening

Authors

Arun Ganesh, Stefan Miklosovic

Reviewers

Brad Schoening

• Tester: Stefan Miklosovic
• Created: 30/May/24 18:50
• Updated: 07/Oct/24 23:40
• Resolved: 07/Oct/24 23:40

Description

Nodetool tabestats reports the space used live and total per table, but not for the entire keyspace.  This would be useful information.

Also, in the table level stats, it would be useful to have the read/write ratio. This metric is important in choosing compaction strategies such as LCS. 

Issue Links

• links to: GH trunk PR
• links to: GitHub Pull Request #3582