Thanks again Luke, I tested the following in "change setting, test producing, review metrics" fashion:
- Remove the `zstd` setting from the broker This had no effect; I could still see the conversions happening - Set the producer to compress to `zstd` This had an effect, and I could see the metric go down. My thought here is that maybe if the setting was on when the topic was created, maybe I have to explicitly change it in the topic? The strange thing is that I also tested this, and I still saw conversion. Do I understand correctly that messages from 9+ do not follow the same conversion as before? If you have a KIP that you know about, Im happy to read.
