After T184485 and T189596, there were a lot of deleted rows from the logging table on many wikis. This is a summary of the numbers of rows deleted:
| wikidatawiki | 654029578 | {icon check-square color=green} |
| commonswiki| 196956373 | {icon check-square color=green} |
| frwiki| 84965885 | {icon square-o color=red} |
| itwiki| 43086794 | {icon square-o color=red} |
| enwiktionary| 40325873 | {icon square-o color=red} |
| shwiki| 38929189 | {icon square-o color=red} |
| dewiki| 30377762 | {icon check-square color=green} |
| viwiki| 29115179 | {icon check-square color=green} |
| frwiktionary| 17784536 | {icon check-square color=green} |
| nlwiki| 16476995 | {icon square-o color=red} |
While the rows have been already physically deleted, optimizing the tables will reclaim (in some cases) a lot of space and clean up the internal purging log (in some cases, fixing slowdowns. eg. dbstore2* T189596#4160236 ).
While this is **not** high priority, it would be nice to keep track of the optimized databases/hosts to not work twice.