Hickup in rankings

It looks like the problem is more serious this time.

Have a look at this bot, a lot of pairings are last battled in 2020, and a lot of pairings have only 1 battle, meaning that some data isn’t recovered. http://literumble.appspot.com/BotDetails?game=roborumble&name=nz.jdc.nano.NeophytePattern%201.1&order=-Battles

Rankings in roborumble, minirumble and nanorumble are stable again, microrumble was stable from the beginning. But as Xor indicated, a lot of pairings have only 1 battle. Sometimes even 1 battle from 2 years ago. Is there something we can do to retrieve the lost battles, or should we continue with the current situation.

Think again, there may not be data loss. For each pairing to have 1 battle, we need 500000 battles, which takes contiguous running of a few months. It's not surprising that it takes 2 years for a round.

Most of the 1 battle pairings are from 2022.3.23 (or 2020.10, didn't remember that though), the exact time the last hiccup happened. This strongly indicates that the data loss happens when a battle is fought for a missing pairing.