SVL_AUTO_WORKER_ACTION
Records automated actions taken by Amazon Redshift on tables defined for automatic optimization.
SVL_AUTO_WORKER_ACTION is visible only to superusers. For more information, see Visibility of data in system tables and views.
Table columns
| Column name | Data type | Description |
|---|---|---|
| table_id | integer | The table identifier. |
| type | character(32) | The type of recommendation. Possible values are distkey and sortkey. |
| status | character(128) | The completion status of the recommendation. Possible values are Start, Complete, Skipped, Abort, Checkpoint, and Failed. |
| eventtime | timestamp | The timestamp of the status column. |
| sequence | integer | The sequence number of a truncated
previous_state value. When a single
previous_state contains more than 200 characters,
additional rows are logged for that value. Sequence is 0 is the
first row, 1 is the second, and so on. |
| previous_state | character(200) | The previous distribution style and sort keys of the table before applying the recommendation. The value is truncated into 200-character increments. |
Some examples of values of the status column are as follows:
Skipped:Table not found.
Skipped:Recommendation is empty.
Skipped:Apply sortkey recommendation is disabled.
Skipped:Retry exceeds the maximum limit for a table.
Skipped:Table column has changed.
Abort:This table is not AUTO.
Abort:This table has been recently converted.
Abort:This table exceeds table size threshold.
Abort:This table is already the recommended style.
Checkpoint: progress
21.9963%.
Sample queries
In the following example, the rows in the result show actions taken by Amazon Redshift.
select table_id, type, status, eventtime, sequence, previous_state
from SVL_AUTO_WORKER_ACTION;table_id | type | status | eventtime | sequence | previous_state ----------+---------+------------------------------------------------------+----------------------------+----------+---------------- 118082 | sortkey | Start | 2020-08-22 19:42:20.727049 | 0 | 118078 | sortkey | Start | 2020-08-22 19:43:54.728819 | 0 | 118082 | sortkey | Start | 2020-08-22 19:42:52.690264 | 0 | 118072 | sortkey | Start | 2020-08-22 19:44:14.793572 | 0 | 118082 | sortkey | Failed | 2020-08-22 19:42:20.728917 | 0 | 118078 | sortkey | Complete | 2020-08-22 19:43:54.792705 | 0 | SORTKEY: None; 118086 | sortkey | Complete | 2020-08-22 19:42:00.72635 | 0 | SORTKEY: None; 118082 | sortkey | Complete | 2020-08-22 19:43:34.728144 | 0 | SORTKEY: None; 118072 | sortkey | Skipped:Retry exceeds the maximum limit for a table. | 2020-08-22 19:44:46.706155 | 0 | 118086 | sortkey | Start | 2020-08-22 19:42:00.685255 | 0 | 118082 | sortkey | Start | 2020-08-22 19:43:34.69531 | 0 | 118072 | sortkey | Start | 2020-08-22 19:44:46.703331 | 0 | 118082 | sortkey | Checkpoint: progress 14.755079% | 2020-08-22 19:42:52.692828 | 0 | 118072 | sortkey | Failed | 2020-08-22 19:44:14.796071 | 0 | 116723 | sortkey | Abort:This table is not AUTO. | 2020-10-28 05:12:58.479233 | 0 | 110203 | distkey | Abort:This table is not AUTO. | 2020-10-28 05:45:54.67259 | 0 |
