[CASSANDRA-17568] Implement nodetool command to list data directories of existing tables

• Type: New Feature
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.1-alpha1, 4.1
• Component/s: Tool/nodetool
• Change Category: Operability
• Complexity: Normal
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/c26dc06a28b0e150384474001ac23026ae76e6d5

Test and Documentation Plan

unit tests

• Assignee: Tibor Repasi
• Reporter: Tibor Repasi

Authors

Tibor Repasi

Reviewers

Brandon Williams, Stefan Miklosovic

• Created: 20/Apr/22 20:03
• Updated: 27/May/22 19:24
• Resolved: 22/Apr/22 12:58

Description

When a table is created, dropped and re-created with the same name, directories remain within data paths. Operators may be challenged finding out which directories belong to existing tables and which may be subject to removal. However, the information is available in CQL as well as in MBeans via JMX, a convenient access to this information is still missing.

My proposal is a new nodetool subcommand allowing to list data paths of all existing tables.

% bin/nodetool datapaths -- example
Keyspace : example
	Table : test
	Paths :
		/var/lib/cassandra/data/example/test-02f5b8d0c0e311ecb327ff24df5ab301

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Issue Links

• is related to: CASSANDRA-16843 List snapshots of dropped tables
• links to: PR#1580