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n.v.harikrishna commented on CASSANDRA-19195:
---------------------------------------------
If maximum threshold guardrail exists, it most likely guards performance
concern (size of quorum increases with CMS size). A large CMS size could make
the commits slower. It doesn't guard like min threshold (guarding from CMS
sizes like 1 or 2 causing availability concerns). I feel maximum threshold did
not appeal much.
> Add guardrails or hard limits for CMS size
> ------------------------------------------
>
> Key: CASSANDRA-19195
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19195
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Transactional Cluster Metadata
> Reporter: Marcus Eriksson
> Assignee: n.v.harikrishna
> Priority: Normal
> Fix For: 7.x, trunk
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Disallow a replication factor of 2 for CMS, consider making 3 a default and
> maybe add auto-expand to 3.
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