+1
On Thu, Feb 13, 2020 at 9:08 PM Fan Liya <liya.fa...@gmail.com> wrote: > > +1 (binding) > > On Thu, Feb 13, 2020 at 11:52 AM Wes McKinney <wesmck...@gmail.com> wrote: > > > +1 (binding) > > > > On Tue, Feb 11, 2020 at 4:29 PM Antoine Pitrou <anto...@python.org> wrote: > > > > > > > > > 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 :-)) > >
