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

min_bytes_for_compact_part

Obsolete setting, does nothing.

min_bytes_for_full_part_storage

Only available in ClickHouse Cloud. Minimal uncompressed size in bytes to use full type of storage for data part instead of packed

min_bytes_for_wide_part

Minimum number of bytes/rows in a data part that can be stored in Wide format. You can set one, both or none of these settings.

min_bytes_to_prewarm_caches

Minimal size (uncompressed bytes) to prewarm mark cache and primary index cache for new parts

min_bytes_to_rebalance_partition_over_jbod

Sets minimal amount of bytes to enable balancing when distributing new big parts over volume disks JBOD. Possible values:
  • Positive integer.
  • 0 — Balancing is disabled.
Usage The value of the min_bytes_to_rebalance_partition_over_jbod setting should not be less than the value of the max_bytes_to_merge_at_max_space_in_pool / 1024. Otherwise, ClickHouse throws an exception.
Last modified on July 23, 2026