https://es.wikipedia.org/w/index.php?title=Anexo:Ascensos_y_descensos_de_la_Categor%C3%ADa_Primera_A&action=edit&oldid=87345116 Click on save page button.
Function: WikiPage::updateRedirectOn Error: 1205 Lock wait timeout exceeded; try restarting transaction (10.64.16.22)
Information: Error is running after a merging pages action. Now I can't delete, edit, revert, nor save an old diff.
It seems ok now. Edition is possible, and can't see error at this time. Maybe we can close this ticket.
I think this is a *real* race condition, but there is not much to do (combination of merging history and then trying to edit)- merging the history takes some time, so it is necessary to wait a bit until it is fully done for further changes. In a way, the errors is protecting the revision history from incompatible changes being applied. The only thing I could suggest is capturing the errors and sending a more friendly message to users- but I not sure how frequently this will happen.
@Jmvkrecords / @Glaisher please do not doubt reopening this ticket if it happens again- in that case please make sure to add the timestamp on when exactly the error happened so we can monitor it on the logs.