runtime_filter_max_in_num specifies the maximum number of distinct values (NDV) allowed for a column in runtime filtering.
Note
This variable is available starting with V4.2.0.
Attribute |
Description |
|---|---|
| Parameter type | int |
| Default Value | 1024 |
| Value range | [0, 10240] |
| Effective Scope |
|
| Read-only | No |
| Whether to participate in serialization | Yes |
| Whether restart is required for the change to take effect | No |
Example
set runtime_filter_wait_time_ms = 100;
set global runtime_filter_max_in_num = 512;