Redshift の分散スタイルやソートキーの自動最適化履歴は SVL_AUTO_WORKER_ACTION で確認することができる。
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 |SVL_AUTO_WORKER_ACTION - Amazon Redshift
