Note
- Since V4.x no longer supports manual control of the execution order of major compactions, this parameter is removed starting from V4.0.0.
- In V4.x, after you execute the
MAJOR FREEZEcommand, the system uses a unified compaction strategy to execute the compaction process. You do not need to manually control the compaction order of each zone. If an error occurs during the compaction, you can refer to the documentation on manual control of major compactions for troubleshooting. For more information about manual control of major compactions, see Manually control major compactions.
Description
enable_manual_merge specifies whether to enable manual major compactions.
Attributes
| Attribute | Description |
|---|---|
| Parameter type | Bool |
| Default value | False |
| Value range |
|
| Effective upon OBServer node restart | No |
Considerations
If enable_manual_merge is set to True, the alter system major freeze statement does not trigger a major compaction. You must manually perform major compactions on each zone. For example, you can execute the following commands to perform major compactions on zone1 and zone2. You can also adjust the compaction order as needed.
alter system start merge zone='zone1';
alter system start merge zone='zone2';