Note
This view is available starting with V4.2.0.
Purpose
This view CDB_OB_BALANCE_JOBS displays the load balancing jobs that are currently being executed in all tenants. Each tenant can have only one load balancing job (JOB) running at a time. Each load balancing job generates multiple load balancing tasks (TASK) to perform the specific operations of load balancing.
Columns
Column |
Type |
Nullable |
Description |
|---|---|---|---|
| TENANT_ID | bigint(20) | NO | The tenant ID.
|
| JOB_ID | bigint(20) | NO | The ID of the load balancing job. |
| CREATE_TIME | timestamp(6) | NO | The creation time. |
| MODIFY_TIME | timestamp(6) | NO | The time when the information was last updated. |
| BALANCE_STRATEGY | varchar(64) | NO | The name of the balancing strategy.
|
| JOB_TYPE | varchar(64) | NO | The task type.
|
| TARGET_UNIT_NUM | bigint(20) | NO | The number of units to be changed in each zone. |
| TARGET_PRIMARY_ZONE_NUM | bigint(20) | NO | The number of primary zones to be changed. |
| STATUS | varchar(64) | NO | The task status.
|
| COMMENT | longtext | YES | The comment. |
| MAX_END_TIME | timestamp(6) | YES | The maximum end time of the load balancing task.
NoteThis column is available starting with V4.2.4. |
Sample query
Query the load balancing jobs that are currently being executed in all tenants.
obclient [oceanbase]> SELECT * FROM oceanbase.CDB_OB_BALANCE_JOBS;
The query result is as follows:
+-----------+--------+----------------------------+----------------------------+---------------------------+--------------------+-----------------+-------------------------+--------+---------+--------------+
| TENANT_ID | JOB_ID | CREATE_TIME | MODIFY_TIME | BALANCE_STRATEGY | JOB_TYPE | TARGET_UNIT_NUM | TARGET_PRIMARY_ZONE_NUM | STATUS | COMMENT | MAX_END_TIME |
+-----------+--------+----------------------------+----------------------------+---------------------------+--------------------+-----------------+-------------------------+--------+---------+--------------+
| 1002 | 68699 | 2024-12-31 17:24:16.758260 | 2024-12-31 17:24:16.758260 | manual transfer partition | TRANSFER_PARTITION | 3 | 1 | DOING | NULL | NULL |
+-----------+--------+----------------------------+----------------------------+---------------------------+--------------------+-----------------+-------------------------+--------+---------+--------------+
1 row in set
References
View the job history of load balancing at the log stream level for all tenants: CDB_OB_BALANCE_JOB_HISTORY
View the load balancing tasks at the log stream level for all tenants:
View the load balancing tasks at the tablet level for all tenants:
View the transfer partition tasks for all tenants:
For more information about data load balancing, see Data load balancing.