2021-12-08T09:36:39.612332+08:00 44213799 [Note] [MY-011825] [InnoDB] Parallel scan: 4
2021-12-08T09:36:39.625789+08:00 44213799 [Note] [MY-011825] [InnoDB] ranges: 268 max_threads: 4 split: 268 depth: 2
2021-12-08T09:36:40.833297+08:00 44213799 [Note] [MY-011825] [InnoDB] n: 1607540
2021-12-08T09:36:40.833339+08:00 44213799 [Note] [MY-011825] [InnoDB] n: 1684951
2021-12-08T09:36:40.833345+08:00 44213799 [Note] [MY-011825] [InnoDB] n: 1592299
2021-12-08T09:36:40.833351+08:00 44213799 [Note] [MY-011825] [InnoDB] n: 1754693

How to Solve:
This is the log generated by the new parallel query feature in mysql 8.0.14.
The above error log, which logs information about parallel scans of aggregated indexes, has been removed again in 8.0.20.

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