Note
For V4.0.0, this parameter is available starting with V4.0.0.
Description
compaction_mid_thread_score specifies the number of threads for Compaction with medium priority. Compaction with medium priority refers to Compaction of Minor SSTables.
Privilege requirements
Query the parameter
The
systenant and all user tenants can query this parameter by using theSHOW PARAMETERSstatement or theGV$OB_PARAMETERSview.Modify the parameter
The
systenant and user tenants can modify this parameter.
Attributes
| Attribute | Description |
|---|---|
| Type | Int |
| Default value | 0, which indicates that the default value of 6 is used. |
| Value range | [0,100] |
| 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 threads for Compaction with medium priority to 6.
obclient> ALTER SYSTEM SET compaction_mid_thread_score= 6;