min_absolute_delay_to_close
Minimal absolute delay to close, stop serving requests and not return Ok during status check.min_columns_to_activate_adaptive_write_buffer
Allow to reduce memory usage for tables with lots of columns by using adaptive writer buffers. Possible values:- 0 - unlimited
- 1 - always enabled
min_compress_block_size
Minimum size of blocks of uncompressed data required for compression when writing the next mark. You can also specify this setting in the global settings (see min_compress_block_size setting). The value specified when the table is created overrides the global value for this setting.min_index_granularity_bytes
Min allowed size of data granules in bytes. To provide a safeguard against accidentally creating tables with very lowindex_granularity_bytes.
min_marks_to_honor_max_concurrent_queries
The minimal number of marks read by the query for applying the max_concurrent_queries setting.Queries will still be limited by other
max_concurrent_queries settings.- Positive integer.
0— Disabled (max_concurrent_querieslimit applied to no queries).
min_merge_bytes_to_use_direct_io
The minimum data volume for merge operation that is required for using direct I/O access to the storage disk. When merging data parts, ClickHouse calculates the total storage volume of all the data to be merged. If the volume exceedsmin_merge_bytes_to_use_direct_io bytes, ClickHouse reads and writes the
data to the storage disk using the direct I/O interface (O_DIRECT option).
If min_merge_bytes_to_use_direct_io = 0, then direct I/O is disabled.
min_parts_to_merge_at_once
Minimal amount of data parts which merge selector can pick to merge at once (expert level setting, don’t change if you don’t understand what it is doing). 0 - disabled. Works for Simple and StochasticSimple merge selectors.min_replicated_logs_to_keep
Keep about this number of last records in ZooKeeper log, even if they are obsolete. It doesn’t affect work of tables: used only to diagnose ZooKeeper log before cleaning. Possible values:- Any positive integer.