v.24.11Improvement

Wait on Active Replicas for ON CLUSTER Queries with Active-Only DDL Mode

Official CH changelog text
Wait only on active replicas for database ON CLUSTER queries if distributed_ddl_output_mode is set to be *_only_active. #69660 (tuanpach).
Introduces the ability to wait only on active replicas for ON CLUSTER queries when distributed_ddl_output_mode is set to *_only_active.

Why it matters

This feature improves reliability and efficiency of distributed DDL queries by ensuring that operations wait only for active replicas, avoiding delays caused by inactive or unreachable replicas.

How to use it

Set the distributed_ddl_output_mode setting to one of the *_only_active values to enable waiting only on active replicas for ON CLUSTER queries.

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