db7 log: 2020-08-24 17:00:29 108 [Note] The slave is applying a ROW event on behalf of a DELETE statement on table rottenlinks and is currently taking a considerable amount of time (61 seconds). This is due to the fact that it is scanning the table while looking up records to be processed. Consider adding a primary key (or unique key) to the table to improve performance.
db7 replica state: Slave_SQL_Running_State: Delete_rows_log_event::find_row(-1)
A PK was added in https://github.com/miraheze/RottenLinks/pull/18, but reverted https://github.com/miraheze/RottenLinks/pull/21. What's the reason? @Paladox