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

merge_tree_clear_old_broken_detached_parts_ttl_timeout_seconds

Obsolete setting, does nothing.

merge_tree_clear_old_parts_interval_seconds

Sets the interval in seconds for ClickHouse to execute the cleanup of old parts, WALs, and mutations. Possible values:
  • Any positive integer.

merge_tree_clear_old_temporary_directories_interval_seconds

Sets the interval in seconds for ClickHouse to execute the cleanup of old temporary directories. Possible values:
  • Any positive integer.

merge_tree_enable_clear_old_broken_detached

Obsolete setting, does nothing.
Last modified on July 23, 2026