v.20.9Improvement

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

This feature removes the previous restriction that required the <internal_replication> setting to be enabled for executing ALTER ... ON CLUSTER queries, providing more flexibility and simplifying cluster-wide schema changes.

How to use it

Users can now run ALTER ... ON CLUSTER queries without modifying the <internal_replication> setting in the cluster config. Simply execute the cluster-wide ALTER query as usual.

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