merge_* server settings - ClickHouse Documentation

These settings configure the ClickHouse server and are autogenerated from ClickHouse source.

merge_tree

Fine-tuning for tables in the MergeTree. For more information, see the MergeTreeSettings.h header file. Example

<merge_tree>
    <max_suspicious_broken_parts>5</max_suspicious_broken_parts>
</merge_tree>

merge_workload

Used to regulate how resources are utilized and shared between merges and other workloads. Specified value is used as workload setting value for all background merges. Can be overridden by a merge tree setting. See Also

Workload Scheduling

Last modified on July 22, 2026