v.20.11Improvement

Allow ALTER ... ON CLUSTER Queries Regardless of internal_replication Setting

Official CH changelog text
Now it's allowed to execute ALTER ... ON CLUSTER queries regardless of the <internal_replication> setting in cluster config. #16075 (alesapin).
Allows execution of ALTER ... ON CLUSTER queries regardless of the <internal_replication> setting in the cluster configuration.

Why it matters

Previously, ALTER ... ON CLUSTER queries were restricted based on the <internal_replication> setting in the cluster config. This feature removes that limitation, enabling more flexible and consistent cluster-wide schema changes regardless of replication settings.

How to use it

Users can now run ALTER ... ON CLUSTER queries without needing to modify or depend on the <internal_replication> configuration in their cluster config files. Simply execute your ALTER statement with the ON CLUSTER clause as usual.

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