Hickup in rankings
Bad news. Once a bot is added, the pairings are only updated for newly added battles. e.g. one bot with 400 pairings, gets to 401 when one battle is submitted. The rest of the pairings seems not to add automatically. So this means 1000000 battles are needed. ;(
I submitted a PR to literumble. https://github.com/jkflying/literumble/pull/3 Hopefully this PR will solve the issue, and with 1000+ battles, the ranking should restore stable.
Merged and deployed, thanks. Should we also update Robocode versions?
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Looks like the ranking isn't recovering as fast as expected, bots with 400 pairings still goes to 401 instead of 1189 after 1 battle. Any idea of this behavior after the PR?
Note that in the 507 still unstable bots of roborumble, 449 are from minirumble, 421 are from microrumble and 228 are from nanorumble. So it seems that bots that also in mini/micro/nano rumble takes longer to get to stable state.
Also note that 391 / 507 unstable bots are last updated since the deploy of the fix.
It is restoring quite fast. At this moment half of the bots in roborumble have all their pairings back. And most of the others have at least 800 pairings.
That may be caused by the batch processing. However, it should be fully recovered if it's caused by batch processing.
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.
