[CASSANDRA-17188] Guardrails for consistency levels

• Type: New Feature
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.1-alpha1, 4.1
• Component/s: Feature/Guardrails
• Epic Link: CEP-3: Guardrails
• Change Category: Operability
• Complexity: Normal
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/a41040ccdcec651bffb4d23843ab9be2d96ba1d1

Test and Documentation Plan

New tests are included.

• Assignee: Andres de la Peña
• Reporter: Andres de la Peña

Authors

Andres de la Peña

Reviewers

Caleb Rackliffe

• Created: 06/Dec/21 13:05
• Updated: 27/May/22 19:25
• Resolved: 11/Mar/22 15:40

Description

Add guardrails for read/write consistency levels, for example:

# Guardrail to warn about or reject read consistency levels.
# By default all consistency levels are allowed.
    read_consistency_levels:
        warned: []
        disallowed: []

# Guardrail to warn about or reject write consistency levels.
# By default all consistency levels are allowed.
    write_consistency_levels:
        warned: []
        disallowed: []

Issue Links

• is related to: CASSANDRA-17292 Move cassandra.yaml toward a nested structure around major database concepts
• relates to: CASSANDRA-17212 Migrate threshold for minimum keyspace replication factor to guardrails
• relates to: CASSANDRA-17353 Flatten guardrails configuration
• links to: PR trunk