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

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use_minimalistic_checksums_in_zookeeper

Use small format (dozens bytes) for part checksums in ZooKeeper instead of ordinary ones (dozens KB). Before enabling check that all replicas support new format.

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use_minimalistic_part_header_in_zookeeper

Storage method of the data parts headers in ZooKeeper. If enabled, ZooKeeper stores less data. For details, see here.
Last modified on July 23, 2026