Brad Schoening created CASSANDRA-21146:
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Summary: Guardrail for client driver versions
Key: CASSANDRA-21146
URL: https://issues.apache.org/jira/browse/CASSANDRA-21146
Project: Apache Cassandra
Issue Type: Improvement
Reporter: Brad Schoening
Many application teams lag multiple years behind on Cassandra driver upgrades,
which increases operational risk and complicates cluster upgrades and support.
Today, there is no native mechanism to discourage or prevent clients from
connecting with severely outdated drivers.
Proposed New Feature
Introduce an optional server-side guardrail that allows operators to block
client connections using drivers older than a configured minimum version (for
example, rejecting Java drivers earlier than 3.11.5).
Key Characteristics
* Disabled by default.
* Configurable minimum supported driver version, scoped by driver type (e.g.,
Java).
* Intended primarily for non-production environments (dev / UAT), where
stricter enforcement can be applied ahead of production rollouts.
* Provides a clear, early failure signal to application teams that a driver
upgrade is required.
Benefits
* Forces proactive driver upgrades before cluster upgrades.
* Reduces risk from unsupported or poorly tested legacy drivers.
* Improves overall fleet hygiene and operational predictability.
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