Added system.zookeeper_log Table to Log ZooKeeper Client Actions

Why it matters

This feature provides detailed visibility into the interactions between ClickHouse and ZooKeeper by recording every ZooKeeper client action. It helps users monitor, debug, and audit ZooKeeper operations, enhancing operational transparency and troubleshooting efficiency.

How to use it

Users can query the system.zookeeper_log table like any other system table to review logged ZooKeeper client actions. No special configuration is required; logging is enabled automatically once the feature is available.