These settings are available in system.merge_tree_settings and are autogenerated from ClickHouse source.
zero_copy_concurrent_part_removal_max_postpone_ratio
Type
Float
Default
0.05
Max percentage of top level parts to postpone removal in order to get smaller independent ranges. Recommended not to change.
zero_copy_concurrent_part_removal_max_split_times
Type
UInt64
Default
5
Max recursion depth for splitting independent Outdated parts ranges into smaller subranges. Recommended not to change.
zero_copy_merge_mutation_min_parts_size_sleep_before_lock
Type
UInt64
Default
1073741824
If zero copy replication is enabled sleep random amount of time before trying to lock depending on parts size for merge or mutation
zero_copy_merge_mutation_min_parts_size_sleep_no_scale_before_lock
Type
UInt64
Default
0
Version history
| Version | Default value | Comment |
|---|---|---|
| 25.3 | 0 | New setting |
If zero copy replication is enabled sleep random amount of time up to 500ms before trying to lock for merge or mutation.