As a follow-up to the "V3" Discussions [1][2] there were some open questions around extensibility and how it might be handled, so that readers could determine if they supported the necessary features.
I think the areas discussed are: 1. New encodings (In spec) 2. Pluggable encodings 3. Extensible logical types. 4. New/additional metadata information in footer. For 1) these are already handled by existing mechanisms at the column level (based on page encodings in column metadata). For 2) the consensus I inferred from PMC members that commented on the doc is that in general this was not a direction we wanted to take (I also concur with this sentiment). But if people want to make a more public argument on why it should be considered we can do it on the ML to make it official For 3) Antoine started a new thread on this [3] For 4) I think any new footer will have a bitmap that will handle changes and extensibility will likely be limited here. If this doesn't cover the use-cases people were thinking of this would be a good place to bring it up. Thanks, Micah [1] https://lists.apache.org/thread/5jyhzkwyrjk9z52g0b49g31ygnz73gxo [2] https://docs.google.com/document/d/19hQLYcU5_r5nJB7GtnjfODLlSDiNS24GXAtKg9b0_ls/edit [3] https://lists.apache.org/thread/9xo3mp4n23p8psmrhso5t9q899vxwfjt
