[CASSANDRA-17195] Migrate thresholds for number of keyspaces and tables to guardrails

• 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: Semantic
• Complexity: Normal
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/bae92ee139b411c94228f8fd5bb8befb4183ca9f

Test and Documentation Plan

New tests are included

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

Authors

Andres de la Peña

Reviewers

Ekaterina Dimitrova

• Created: 06/Dec/21 17:39
• Updated: 27/May/22 19:25
• Resolved: 17/Dec/21 16:36

Description

Migrate the existing thresholds for the number of keyspaces and tables:

# table_count_warn_threshold: 150
# keyspace_count_warn_threshold: 40

to a new guardrail under the guardrails section, for example:

guardrails:
    keyspaces:
        warn_threshold: 40
        abort_threshold: -1
    tables:
        warn_threshold: 150
        abort_threshold: -1

Please note that CASSANDRA-17147 has already added a guardrail for the number of tables, but the previous not-guardrail threshold for warning about the number of tables still exists.

Issue Links

• relates to: CASSANDRA-17147 Guardrails prototype
• Testing discovered: CASSANDRA-17216 TestMaterializedViews::test_drop_with_stopped_build is flaky
• Testing discovered: CASSANDRA-17217 LocalReadSizeWarningTest#failThresholdSinglePartition is flaky
• links to: PR trunk