The Arrow C Stream Interface is still listed as experimental [1], though it was introduced about 20 months ago [2]. It's being used in the well-advertised integration between PyArrow/R arrow and DuckDB [3]. Support was added to both Rust implementations [4][5]. It was discussed in today's sync meeting that additional systems have been experimenting with it [6].
Should we stabilize the API now? Or are there any changes we need to contemplate based on the experience of our early adopters? [1] https://arrow.apache.org/docs/7.0/format/CStreamInterface.html [2] https://github.com/apache/arrow/pull/8052 [3] https://arrow.apache.org/blog/2021/12/03/arrow-duckdb/ [4] https://github.com/apache/arrow-rs/pull/1384 [5] https://github.com/jorgecarleitao/arrow2/pull/857 [6] https://lists.apache.org/thread/x03nck8rpmyd8td6vpz1ctqgno1cbf10
