Note
This parameter is available starting with V1.4.
Description
bf_cache_miss_count_threshold specifies the threshold for triggering the BloomFilter cache. When the number of macroblock misses reaches this value, a BloomFilter cache is created.
Privilege requirements
Query the parameter
The
systenant and all user tenants can query this parameter by using theSHOW PARAMETERSstatement.Modify the parameter
Only the
systenant can modify this parameter. User tenants cannot modify this parameter.
Attributes
| Attribute | Description |
|---|---|
| Type | Int |
| Default value | 100 |
| Value range | [0, +∞) When the value is 0, the creation of the BloomFilter cache is disabled. |
| Modifiable | Yes. You can use the ALTER SYSTEM SET statement to modify the parameter. |
| Effective upon OBServer node restart | No. The setting takes effect immediately. |
Examples
Set the number of macroblock misses to 100 to create a BloomFilter cache.
obclient> ALTER SYSTEM SET bf_cache_miss_count_threshold=100;
