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These settings are available in system.merge_tree_settings and are autogenerated from ClickHouse source.

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remove_empty_parts

Remove empty parts after they were pruned by TTL, mutation, or collapsing merge algorithm.

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remove_rolled_back_parts_immediately

Setting for an incomplete experimental feature.

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remove_unused_patch_parts

Remove in background patch parts which are applied for all active parts.
Last modified on July 24, 2026