v.24.12Improvement

Ensure ClickHouse Detects ZooKeeper Changes on Config Reloads

Official CH changelog text
Ensure that ClickHouse will see ZooKeeper changes on config reloads. #72593 (Azat Khuzhin).
ClickHouse now detects and applies ZooKeeper configuration changes upon config reloads without needing a full restart.

Why it matters

This feature ensures ClickHouse can dynamically reload ZooKeeper configuration changes, improving cluster management and reducing downtime by eliminating the need to restart ClickHouse when ZooKeeper settings are updated.

How to use it

After updating ZooKeeper settings in the ClickHouse configuration, trigger a config reload (e.g., using system reload config), and ClickHouse will recognize and apply the ZooKeeper changes automatically.

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