[CASSANDRA-16806] Allow DELETE and TRUNCATE to work on Virtual Tables if the implementation allows it

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.1-alpha1, 4.1
• Component/s: Feature/Virtual Tables
• Change Category: Operability
• Complexity: Low Hanging Fruit
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/f7c71f65c000c2c3ef7df1b034b8fdd822a396d8

Test and Documentation Plan

I added unit tests covering the necessary use cases and updated virtualtables.rst.

• Assignee: Aleksei Zotov
• Reporter: Benjamin Lerer

Authors

Aleksei Zotov

Reviewers

Benjamin Lerer, Chris Lohfink

• Created: 16/Jul/21 09:34
• Updated: 27/May/22 19:25
• Resolved: 17/Sep/21 13:10

Description

TRUNCATE statements are currently not supported by Virtual Tables. For some Virtual Tables it makes sense to allow it.

It can be done by adding a truncate method to the VirtualTable interface and calling that method from TruncateStatement. The default implementation of the method should be to fire an InvalidRequestException saying that truncate is not supported on that specific table.

Issue Links

• blocks: CASSANDRA-15254 Allow UPDATE on settings virtual table to change running configurations
• blocks: CASSANDRA-16914 Implement Virtual Tables for Auth Caches