Amazon Redshift will no longer support the creation of new Python UDFs starting November 1, 2025.
If you would like to use Python UDFs, create the UDFs prior to that date.
Existing Python UDFs will continue to function as normal. For more information, see the
blog post
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 |
