[CASSANDRA-11382] Support modifications to schema tables in minor releases

• Type: Improvement
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 5.x
• Component/s: Legacy/Distributed Metadata
• Assignee: Unassigned
• Reporter: Sam Tunnicliffe
• Created: 18/Mar/16 11:17
• Updated: 07/Mar/23 10:54

Description

At the moment, any changes to the system_schema tables requires a major version bump to avoid schema disagreement problems and related failures during schema migrations.

Recent examples where this has been problematic include CASSANDRA-11050 and CASSANDRA-8094, both of which require temporary TODO - remove this in 4.0 type workarounds.

Diminishing the significance of major releases changes is a long term goal, so coming up with a general solution for this would be useful.