What’s the latest thinking around the coordinator scaling and the number of segments per time chunk? A while back, there was some guidance that around 2000 segments per timechunk was the ideal number and we’d sized our ingest granularity accordingly. But I know the coordinator is so much more performant in newer releases and wondered if that guidance still held.

It is more performant now and it is possible to have more. The main thing that changed was the efficiency of the balancing algorithm. There's a hard limit of 32k per time chunk, though, so don't get too close to that