Ah, you're right, it's PR 6040: https://github.com/apache/arrow/pull/6040
Similarly, the C++ implementation is at PR 6026: https://github.com/apache/arrow/pull/6026 Regards Antoine. Le 11/02/2020 à 23:17, Wes McKinney a écrit : > hi Antoine, PR 5442 seems to no longer be the right one. Which open PR > contains the specification now? > > On Tue, Feb 11, 2020 at 1:06 PM Antoine Pitrou <anto...@python.org> wrote: >> >> >> Hello, >> >> We have been discussing the creation of a minimalist C-based data >> interface for applications to exchange Arrow columnar data structures >> with each other. Some notable features of this interface include: >> >> * A small amount of header-only C code can be copied independently into >> third-party libraries and downstream applications, no dependencies are >> needed even on Arrow C++ itself (notably, it is not required to use >> Flatbuffers, though there are trade-offs resulting from this). >> >> * Low development investment (in other words: limited-scope use cases >> can be accomplished with little code), so as to enable C or C++ >> libraries to export Arrow columnar data with minimal code. >> >> * Data lifetime management hooks so as to properly handle non-trivial >> data sharing (for example passing Arrow columnar data to an async >> processing consumer). >> >> This "C Data Interface" serves different use cases from the >> language-independent IPC protocol and trades away a number of features >> in the interest of minimalism / simplicity. It is not a replacement for >> the IPC protocol and will only be used to interchange in-process data at >> C or C++ call sites. >> >> The PR providing the specification is here: >> https://github.com/apache/arrow/pull/5442 >> >> In particular, you can read the spec document here: >> https://github.com/pitrou/arrow/blob/doc-c-data-interface2/docs/source/format/CDataInterface.rst >> >> A fairly comprehensive C++ implementation of this demonstrating its >> use is found here: >> https://github.com/apache/arrow/pull/5608 >> >> (note that other applications implementing the interface may choose to >> only support a few features and thus have far less code to write) >> >> Please vote to adopt the SPECIFICATION (GitHub PR #5442). >> >> This vote will be open for at least 72 hours >> >> [ ] +1 Adopt C Data Interface specification >> [ ] +0 >> [ ] -1 Do not adopt because... >> >> Thank you >> >> Regards >> >> Antoine. >> >> >> (PS: yes, this is in large part a copy/paste of Wes's previous vote >> email :-))
