Note
This view is available starting with V4.2.0.
Purpose
This view displays the Transfer tasks that are currently being executed in the current tenant.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| TASK_ID | bigint(20) | NO | The ID of the Transfer task. |
| CREATE_TIME | timestamp(6) | YES | The time when the task was created. |
| MODIFY_TIME | timestamp(6) | YES | The time when the information was updated. |
| SRC_LS | bigint(20) | NO | The log stream on the source end (the log data stream generated by the data source). |
| DEST_LS | bigint(20) | NO | The log stream on the destination end. |
| PART_LIST | longtext | YES | The list of partitions, including user table partitions and global index partitions. |
| PART_COUNT | bigint(20) | YES | The number of partitions in the partition list. |
| NOT_EXIST_PART_LIST | longtext | YES | The list of partitions that are planned to be executed in this task but do not exist when the lock is added. |
| LOCK_CONFLICT_PART_LIST | longtext | YES | The list of partitions that are planned to be executed in this task but encounter lock conflicts when the lock is added. |
| TABLE_LOCK_TABLET_LIST | longtext | YES | The list of tablets for table locks at the partition level that are successfully locked when the task enters the START state. This list contains only tablets corresponding to partitions in the PART_LIST. |
| TABLET_LIST | longtext | YES | The complete list of tablets involved in the current Transfer operation. This list includes not only the tablets listed in the PART_LIST but also tablets associated with local index tables and LOB auxiliary tables. |
| TABLET_COUNT | bigint(20) | YES | The number of tablets in the tablet list. |
| START_SCN | bigint(20) unsigned | YES | The SCN when the Transfer operation was initiated. |
| FINISH_SCN | bigint(20) unsigned | YES | The SCN when the Transfer operation was completed. |
| STATUS | varchar(64) | NO | The status of the task. Valid values:
|
| TRACE_ID | varchar(64) | NO | The trace ID of the entire task. |
| RESULT | bigint(20) | YES | The result of the task. |
| BALANCE_TASK_ID | bigint(20) | NO | The ID of the associated load balancing task. This Transfer task is a subtask generated by the corresponding load balancing task. |
| TABLE_LOCK_OWNER_ID | bigint(20) | YES | When a table lock is added, the system generates an owner_id for each table lock to identify the owner of the lock. When the table lock is released, the corresponding owner_id must be provided to allow the system to correctly identify and release the lock. |
| COMMENT | longtext | YES | The comment. This column records the reason for the current stall, diagnostic information, and details of the task failure. |
References
To view all tenant-level load balancing tasks (Task):
To view all tenant-level log stream load balancing jobs (Job):
To view all tenant-level log stream load balancing tasks (Task):
To view all tenant-level Transfer partition tasks (Task):
For more information about data load balancing, see Data load balancing.